13 weeks pregnant • Pregnancy calendar •

This is the last week of your first trimester and your baby weighs 14 to 20 grams. The crown-to-rump length of your growing baby is 2.6 to 3.1 inches. Your baby is now about the size of a peach. Fetal growth is amazing from now through about the 24th week of pregnancy.

A 13 week old fetus by SONOReal 3D ultrasound imaging

At this point of your pregnancy, there is a steady flow of pregnancy hormones in your bloodstream. Your body will adjust to the changes and morning sickness might stop and other early symptoms will begin to ease. Because the second trimester is approaching, feelings of anxiety or nervousness may also diminish. You have probably gained some weight by now. You are losing your waist and your clothing is probably fitting snugly.

There is a milky membrane that surrounds your baby. It is pierced by the umbilical cord and is made up of two layers, which are fused together. Your placenta provides most of the nutrients and oxygen that your baby needs. By this week, the placenta is well formed and ready to take over hormone manufacture from your ovaries. The placenta will produce progesterone and estriol. These hormones will be crucial in the maintenance of your pregnancy. Tissue that will form your baby\'s bones is being laid down, especially around the head and limbs. The nose and chin are becoming more prominent. Your baby\'s eyelids meet and fuse together and they will not open again for nearly four months. The eyes started out on the side of your baby\'s head and they are now moving closer together on the face. The ears come to lie in their normal position on the sides of the head. If examined outside of the womb, you will be able to distinguish male from female at this time.

The sockets for all twenty teeth are formed in the gums, and vocal cords are beginning to form.

Comments on week 13

Comments 1-49 of about 2488 from week 13
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pr3gojenn - 6.4 hours ago
Here I thought after 2 days of not power puking that I was over the whole MS but then it strikes again. I can only be in one part of our house because the dogs make me so sick by their smell. Its horrible. I have lost a lb but im not to worried. anyway for all of you who are here at 13 weeks CONGRATS

Tastiecake731 - 8.5 hours ago
Sounds like we are having a beat up our husband forum..LOL I must say I can feel your pain on most that everyone has posted, however my poor husband has been going through sympathy symptoms from the beginning. It actually GETS on my nerves at times because HE'S NOT PREGNANT I AM! But I can't take the smell of his cologn so he stopped wearing it and got some body spray (he ran it by me before purchasing it to make sure I could handle it). We don't sleep together because he snores too loud (he's actually going for a sleep study tonight) and we're working through all the other issues. I find that if we talk about it, even if he doesn't like what I have to say it works itself out somehow. For all that he gets on my nerves he makes up for in many other ways. Like he rubs my feet almost every night...they stay swollen..and it's only the first trimester. He waits on me most of the time like a queen, although that can even get on my nerves at times. I know it sounds crazy but my mood swings are terrible at times. And BABYONE4ME..I get depressed too at times, I start questioning what the heck am I doing...and it's all normal..part of these wonderful hormones that are surging through our systems. AND I have bumps all over my face, chest, back, shoulders, and even in my scalp. I HATE it and the nurse just tells me it's the hormones. As if that is supposed to help.

cissy - 9.3 hours ago
The thought of husbands, I tell him he stinks if he smokes and comes right by me, I tell him to quit snoring, if he is to loud breathing, snoring in bed I kick him and tell him to move over so I can try to get to sleep, if he is really bad I will just sleep on the couch cushions on my son's floor. I am ok listening to my son breathe while sleeping, and some times he is loud and has some bad breath but his doesn't bug me as much as the husbands. It is funny though if the husband wakes up from me kicking him or anything he gets mad at me and he goes to the edge of the bed and faces the other way so I get my way either way. I have to have air moving either the air conditionar or the windows have to be open. Oh yea and the husband never gets food unless it is fast food or cereal and toast because I won't cook food right now. Good thing my kid isnt' to picky and will eat chips for dinner, or hot dogs, or just yogurt, wait last night he ate toast for dinner.

@m83R - 9.4 hours ago
Hey everyone I go in for ultrasound tomorrow just to make sure everythings ok. I am so excited, maybe if we're lucky we can see what i'm having!

californiabeso - 10.5 hours ago
Ive gained 12 pounds...and I dont understand how if everything made me want to throw up! I have been in maternity clothes since week 7 or 8 and not because I have a belly but because my clothes is sooooo tight. My face has been broken out for about 2 weeks now...its actually my neck and my back..yuck! I have the headaches too...feels like my head is going to explode. On a good note, the ms is considerably less than it was before and I am actually able to work out again...Yay!

babyone4me - 10.7 hours ago
Hi everyone! I was reading and I cant help but say, I am so glad I am not alone! My face and chest looks like I am 13 agian, but worse! The bumps were getting huge, one of my friends told me what product to use and wow, I may not have many things in control, but I think I finally have that. I also, was wondering, if any of you ladies have been depressed? I have noticed, that I am not happy, and I feel bad for that. I am not sure if it passes or what, any thoughts?

Allioop - 11.2 hours ago
Mandalyn---just tell him, HEY HON? YOU STINK!!!! LOL ROTFL!!! That is too funny--I swear I'm the same way with my hubby. He's lucky if he doesn't end up on the couch because everything he does annoys me right now! Did you ever see the episode of Jon & Kate + 8 where Kate tells Jon to stop breathing so loud? LMAO That is SO me right now! I keep telling him to STOP BREATHING!!! LOL

mandalyn21 - 12.5 hours ago
Haha! Now I have to sleep with the air conditioner on (and freeze all night) just to circulate the air- I SWEAR the smell of whatever he ate seeps through his pores and smells up the room! So far I've come to the conclusion that spanish food, beef jerkey, seafood and after he smokes a cigarette makes me the most nauseus! (yes I have a list going in my head, lol). I feel horrible, I can't even cuddle with him at night anymore and I don't have the heart to tell him why!

rhulpke - 13 hours ago
I'm 13 weeks and a day today and my morning sickness seems to be getting a little better but now I'm getting really bad heartburn every day. I'm finally hungry again but now I'm too scared to eat. This pregnancy is not treating me very nice. I was wearing bigger clothes for a while because my stomach hurt all the time from m/s but today I put on my regular jeans and they fit just fine. I can't wait to start showing. Now that the m/s is subsiding I don't really feel pregnant any more.

LiNdSeYRoBeRtS - 14.3 hours ago
I feel all ya'lls pain.. i promise you I pee 1000 times a day it seems like but i'm not gonna complain we all have an angel we're carrying so its all worth it

Allioop - 14.7 hours ago
Mandalyn--I asked my hubby weeks ago to stop spraying cologne in here! I would gag and gag until the smell went away which we all know how we can smell things that 'normal' human beings can't! I swear I smell every single thing that is in my house no matter where it is! I think I need to live in a bubble until this passes:)

mandalyn21 - 15.5 hours ago
These last two days have been horrible- not only have I woke up nauseus and yet again, gotten sick from gagging on my toothbrush, but I've been nauseus the WHOLE day since yesterday! I woke up at 3am feeling sick to my stomach thankfully only for a few minutes but between waking up 3-4 times a night to pee, the oily skin, the fatigue (which has gotten WORSE, not better), the cramps from my growing uterus, the nausea and the frustration of it all, I'm so sick of it! I feel so bad because my boyfriend will use his Axe soap in the shower and the smell will make me sick to my stomach! I had to ask him if he could switch to a different soap! And then if he eats something gross like seafood (egh!) I swear I can smell it from across the room! Poor Nick, I feel like I have to ask him to practically stop living just so I don't get sick :( I just want to feel 'normal' again!!! :(

stacidrake - 15.6 hours ago
Me too, my face is a mess.. I also have been feeling all stressed out about nothing..Hubby might take a new job in Lexington, which is I dont know 11 hours away, but closer to our parents house..I swear, I though when he got out of the military we wouldnt be moving so much, since then I think we have moved at least 5 times... blah anyone else getting headachs?

Tastiecake731 - 17 hours ago
Ok guys..I was going to say boy it feels like this time is creeping by..finally to week 13 ..hooray!!! Then I started reading the post, boy I'm sorry you all are broken out but I'm so glad I'm NOT alone. My face is extremely OILY and I have new pimples coming up I swear every day. AND my chest is awful too! It looks like I've got the chicken pox or something. I've been using nuetragena acne treatment, it helps a bit but these hormones are kicking my but with all these changes. Anyone's boobs still hurting? Mine are so full and tender I HAVE to wear a bra 24/7. If I don't I wake up in so much pain, I told my hubby it's like when your hands go numb in the winter and then you start to have feeling back in them and it's a slow burn. That's what my bbs feel like. Sorry to complain..I know it's all worth it just not fun going through..LOL

mandalyn21 - 17.3 hours ago
I went out and got the BEST jeans at the Motherhood store last night- they are so comfortable!! I can't fit into my old jeans anymore but these new ones with the elastic like waist- Ah! I want to live in them! Oh ans also, my face isn't breaking out as much as it is OILY!! I have those oil absorbing sheets and I'm having to use them like 4 times a day- I feel so gross! I've used Proactiv before and it worked so good but I'm wondering if it's safe to use in pregnancy? Does anyone know how I can decrease some of this nasty oil?I'm ready to take a vaccuum to my face to suck it out of my pores, lol

Allioop - 17.5 hours ago
Ugghhh! I'm all broken out too:) Isn't that the worst? When you should feel beatiful and happy you look and feel fat and ugly! I had the worst acne when I was pregnant with my daughter too---2 days after delivery my skin was crystal clear! Didn't get any of that with my son so I'm thinking this might be another girl! I think it's all those extra 'girl' hormones! LOL

LiNdSeYRoBeRtS - 18 hours ago
You can just call me pizza face haha!!! MY face, back, and chest is so broke out.. Hopefully that will get better

Grace33 - 18.2 hours ago
I have gained 5 pounds so far, but being short it feels like 10+. I can not fit in my cloths with just 5 pounds, Ugg! I already feel just unattractive! I think the water retention varies alot each day. One day I feel like a cow and then another I think I look better. I wish so badly I could just enjoy the beauty of it, but I just feel fat!

bean01 - 19.2 hours ago
i duno about anyone else but i'm a spotty not so hottie lady at the moment hehe i feel like i'm a teenager again...ahhhh!!

mum444 - 19.8 hours ago
wow im so jelous of you guys losing weight during pregnancy! ive piled it on...more than im supposed to i think, i gorge when im hormonal, and now ive hit the hormonal jackpot! now im just fat and depressed lol

emily82 - 20.3 hours ago
Hi everyone! First day in week 13 :)

Allioop - 21.4 hours ago
amynicole--it is totally normal for women to not gain or even lose in the 1st trimester. I lost 10 pounds the first couple of weeks and have yet to put any on...as long as baby is growing fine DON'T WORRY!!! You'll have plenty of weight gain in a few months:)

amynicole - 21.5 hours ago
I dont think i am gaining enough weight. I think maybe i have gained maybe 2 pounds but kept losing it b/c i couldnt eat. I can eat now but still seems like i am not gaining and i eat all the time. on other hand i do have little bump and doc said baby is growing, so guessing its ok for now

sunflowerc - 23.8 hours ago
yeah i am 13 weeks today, cant wait to get a bump again. does anyone have any idea when i should start to see a bump. i feel like there is somthin there but my partner says he cant tell. does that sound carzy that i think i can see a bump lol xx

beerieth - 1 days ago
Ok girls... I understand the frustration with Ashleexoxo, but at the same time we need to ignor the situation. What she is doing is not right and yes she is living in a dream that is not her's. Those of us who are stronger people and not living a lie need to just stop with the comments.. because she might indeed like the negative attention, if she gets none at all.... I am not on her side, but this needs to stop on her end because this is not the site for this type of conversations... HOPE TIME IS TICKING By quickly for everyone.. I sometimes feels like its going slow.. good luck and I hope to continue to talk to everyone here :)

mum444 - 1 days ago
p.s that ashlee person really is sick! i think its just a joke and we shouldnt feed her sick game with attention!

mum444 - 1 days ago
Hi ladies! Im a day early to week 13, hehe but i just wanted to ask if anyone has felt their baby move yet? Im 99% sure ive felt my little one moving but it could be my imagination! Well things are going well for me atm, hope all is wekk with everyone else :)

tabitha - 1 days ago
Gee that chick Ashlee is one weired girl and needs to grow up and get a life...OMG how many kids pictures does she have...LMAO

AmyEvers - 1 days ago
Kaite, thank God you and the baby are all right :) Have fun on your couple days of bed rest and let us know if anything changes!

KatieLm - 1 days ago
I had a bad scare...I started bleeding around 4am this morning and of course thinking the worst!! I went to the dr.'s this morning and the baby was doing great, bouncing all around!! Thank God!! This is so stressful!! I am on bed rest and think i will be this way for a few days at the least!!

adriennella - 1 days ago
Hi, ladies and congratulations on your pregnancies! I am considering a natural childbirth and have had endometriosis for 20+ years. If you have endometriosis and have had a natural childbirth, will you please write to me on my page?

mandabelle22 - 2 days ago
just got my wisdom tooth yanked out.. ouch.. last day in 13. see yall in 14. ;D

samxdean - 2 days ago
hi ladies i need your help im in a competition with my partner our baby and need people to rate our video please take a look and rate my clip it means the world to us!!! thank you all wish me luck love sam xxx http://your.gm.tv/ClipDetails.aspx?clipid=54466&cid=108&scid=58

chicanamommy - 2 days ago
WARNING! i hate to do this but this profile is fake! ashleexoxo this girl stoled a pictures of my friend's babies and shes saying they're her twins! what a shame! =/ i had to report this i just woulnt want no one stealing my babies pictures! heres the link: http://www.i-am-pregnant.com/vips/addvipphotocomments.php?id=ashleexoxo|439989983&vnaam=ashleexoxo

brookesmomcindy - 2 days ago
Haha my husband won't let me go into babys r us unsupervised. Our credit card company LOVED me while I was prego. He dreads the though of going and each time I make him go in there he makes me let him get a hot wheel car. :) Boys will be boys!!

mandabelle22 - 2 days ago
yeah, lol I've already registered for just a couple of things there. love love love Babiesrus. That's where I ordered my stroller. When it arrived yesterday I made my hubby put it together and then I put my dog in there and strolled her around the house... ;D he he he...

windy - 2 days ago
Today's my last day in week13- Good luck to all of you- see you next week!

amynicole - 2 days ago
does anyone know an easy way to get wallpaper off wall. some of its on drywall while other is over paint. we can pull top part off but cant pull bottom off and its taking forever cuz its ripping some of drywall. i have to get wallpaper off so i can paint room 4 baby

Allioop - 2 days ago
Well, I thought I was over the m/s but I woke up at 4 AM this morning and sat here feeling miserable for almost 3 hours until 2 minutes ago when I FINALLY threw up. Now I feel better:) Phew! Isn't this part over yet? Funny story--when I was pregnant with #2, my daughter was 2 years old and I used to just wretch over the trash can because I couldn't even stick my head near the toilet or it would make me worse. Well, one day I come into the bedroom and my little daughter has her head over the trash can and is mimicking me puking! It was the funniest thing I ever saw!

NicolePS - 2 days ago
I can't sleep errrrrrrr! it's almost midnight :(

NicolePS - 2 days ago
babies r us is so addicting when your pregnant :) everything is sooooo cute and you want everything! Find out the sex then watch out !

californiabeso - 2 days ago
I've bought some stuff..just onesies and bibs. Yesterday we went to Babies R Us and my husband wanted to register...LOL I had to talk him out of it!

mandabelle22 - 2 days ago
Have any of you ladies bought anything for your little ones yet? I've already bought a stroller. ha ha ... if God forbid anything were to happen I would just return it or ebay it.. not a big deal.. I'm just sooo excited! can't wait!

mandabelle22 - 2 days ago
I'm finally back from Guantanamo Bay (4 plane rides later, ugh) and today and yesterday is the only time I've been a little queezy.. It's good to be back, just thought I'd give yall a holler

naomi88 - 2 days ago
Today has been a good day for me! I went to my little cousins bday party at a park, then I went swimming with my husband and brother in law at their dads house. It was really nice to get out of the house! We are about to go eat some pizza and salad... I am excited!

@m83R - 2 days ago
Hi everyone, first time in here, 13 weeks and 2 days pregnant with my first and i am so excited!

BonaBaby - 2 days ago
Nicole, I had some pretty bad cramp/stretching pains with my first pregnancy too. I remember one day being so bad I spent it curled up in the papasan chair!

Teiyaria - 3 days ago
Ok, I have been in week 13 for about three days now, jus havent been on. But yesterday I actually went out wit my friends n had the best time ever n didnt think that was possible without havin a alcoholic drink, but it was sooo great! Even though I was totally sober.. Loved it!

californiabeso - 3 days ago
I didnt feel horrible last night...I even wore my retainer to bed which I havent done since I got pg cause it grossed me out to put it in my mouth. I hope the ms is gone...but then I freak out cause I think something is not right! Ugh...I can never win!

Allioop - 3 days ago
Nicole-I get those too. I also get sharp pains in my groin that last for about a second too. They say it's the round ligaments (the ones that hold your uterus off your pelvic floor) stretching to accomodate your growing uterus. I can feel a hard little bump in my tummy now. I can't wait to get a little bigger and feel baby kicking around!

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Members in week 13:

airforcewife11 - 07 Jan 2009
AmyEvers - 07 Jan 2009
babyone4me - 07 Jan 2009
BonaBaby - 07 Jan 2009
Courtney.M - 07 Jan 2009
dmc38 - 07 Jan 2009
FieryMomma - 07 Jan 2009
hailsb - 07 Jan 2009
happytobepregnant - 07 Jan 2009
jillann - 07 Jan 2009
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minimel - 07 Jan 2009
mrswood - 07 Jan 2009
mummywummy - 07 Jan 2009
Nicolette - 07 Jan 2009
ommom - 07 Jan 2009
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tabitha - 07 Jan 2009
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wikat - 07 Jan 2009
youngashley - 07 Jan 2009
amynicole - 08 Jan 2009
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Allioop - 09 Jan 2009
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The due date from members in week 13 is from Wednesday 7 January 2009 up to & including Tuesday 13 January 2009. See the full timeline here

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