You are 13 weeks pregnant.

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Born & Birth stories

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 1406 from week 13
42 messages have been added in the last 24 hours.
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linz88 - 32 minutes ago
13 weeks today stil cant believe ive made it this far.. had a early scan @ 11 weeks 2days and ive got my origijal scan today cant w8 xx

sunflower-j - 3.2 hours ago
well i had to have something sweet. so stopped at the bakery on the way home from getting the kids from school. all i wanted was an apple turnover with fresh cream. well...... i got it but it was the worst one i have had in a long time. sorry guess it was awful. so that hasnt hit the spot at all. love-a-belly...... bugger them. you deserve to be able to enjoy being pregnant. its not that easy getting there either. i personally know someone who is bitter cause she wants to have another but hasnt had any luck. in saying that she says she has been twice and lost them. but there was not drs confirmation. im sorry but if i even think i am i go to the drs as i have had an ectopic and would not risk it again. dont let them get to you hunni. i know easier said than done. xoxoxo

love-a-belly - 3.3 hours ago
OMG i can not beleive how slow time is going now that we have announced the pregnancy to everyone! befor it was wizzing by, i thinks it is the people in our lives making it hard on us that has made it go so slow... 'oh it's hard on them' well i'm sorry if they expected to get pregnant in one week in europe or in the week he's been home from Afgan. honestly i'm just over every ones crap go live their lives and let us do the same and stop wingeing pft! god i sound so rude sorry :( i'm just sick of everyone just assuming it was easy for us to get pregnant. well after about 6 months of trying and 2 misscarrages i think weather or not they know about the latter, i deserve some respect. looking forward to week 14 3 days to go woohoo!!

newbb - 3.6 hours ago
SMM18- i know i hope it never comes back it really does alot to your nerves you dont know if you should be getting excited or preparing for the worst. im just glad its gone. I quit smoking when i was pregnant with my daugther as well and i dont know why i ever started again but i hope this is my last time having to quit:) so excited to see my lil one again tomorrow :) i love it. i have ultra pictures from 7 weeks 10 and 11 its so amazing the difference from week 7 a pin prick on the pickture to week 10 looking like a baby :) My head started pounding today too ate some watermelon and bam it went away.

sunflower-j - 4.8 hours ago
lol all pointing to a boy.

sunflower-j - 4.8 hours ago
thanks will look it up

threeprettygirls - 5.7 hours ago
It's here: http://www.i-am-pregnant.com/encyclopedia/F/Fetal-Heart-Rate/

threeprettygirls - 5.7 hours ago
I just googled it and it lead me to a page on this site- it was really cool with a graph and explainations as well! Check it out :)

sunflower-j - 6 hours ago
i was wondering bout the hb as mine was 159 the other day. yeah girls are faster hb

threeprettygirls - 6.1 hours ago
The baby's heart rate was 163- isn't there a wives tale of faster heart rates are girls? Is 163 on the faster side?

ashleyb2010 - 7.7 hours ago
Just went for a jog, and I think that I am regretting it, my round ligaments are shooting some sharp pains,and my lower back got achy when I stopped, I think that I am going to have a large cup of hot tea, and relax until dinner!

threeprettygirls - 7.9 hours ago
That ice chip talk has got me crazy dying for a snow cone!! I'm so thirsty all the time.. Mmmm snow cones.

ashleyb2010 - 8.4 hours ago
So here is my philosophy on being pregnant.... There are too many delicious things to eat, and not enough meals to eat them all in. Sooo sad! =)

augusteleventh - 8.9 hours ago
byeeeeeee ladies!!!!!!!! see you in week 14 soon!

word-nerd - 10.1 hours ago
Hi Ladies! This is my first time posting anything, although I've been reading your posts for a while. Irishdaisies, I'm not sure how much your mom's pregnancies will have in common with yours. My mom had really easy pregnancies and deliveries, and neither my sister nor I had the same luck. We're all different. Don't worry about horror stories. Whatever you end up having to go through to get your bub out is well worth it. Trust me...4 years ago I said I would never ever do it again....and here I am in Week 13. Apparently some things are worth it (like the chance of having another one like my awesome little boy.)

Leenieworm - 10.2 hours ago
The pimples like I'm 15 again are driving me crazy! I have never had bad acne and feel really lucky but my forehead looks like a mine field right now! Aarg!

sunflower-j - 10.5 hours ago
apparently if you have ice or ice chips it hydrates cause it goes to your blood. well that is what i heard

Stay@HomeZOOKeepa - 10.7 hours ago
Smm- I've heard that before and hcave always wondered why do frozen things keep us better hydrated, do you know??? But thnks for the tip :) I'm always dehydrated!

Nikkers - 11 hours ago
Hi ladies! Just joined the site! So excited to see so many August due dates :) I'm 13 weeks and 3 days with baby #2. Is anyone showing yet?

smm18 - 11.4 hours ago
Newbb - Hooray! My spotting stopped a few days ago as well, and I am so relieved! Lets keep our fingers crossed and hope that we're done spotting for good! Oh, and P.S. I'm so proud of you for quitting smoking! That's great!

smm18 - 11.4 hours ago
I find that my headaches subside when I make sure that I am hydrated...which can be very hard. Try sucking on ice-cubes or eating popsickles and see if that helps make the headache go away. Something about frozen liquids hydrates you better than regular liquids.

smm18 - 11.5 hours ago
Ashley Agar - I know exactly what you mean about toddlers causing chaos! And for some reason, when my toddlers nap time comes around, I'm the one sleeping, and she's running around making a mess!

lol1230 - 13.5 hours ago
I have to say I read the posts every day and some things I can commiserate with and others I just enjoy reading. This is my first time posting something because the headaches is something I have to chime in on. For the most part, I've had a pregnancy of no symptoms. I've had no morning sickness, nothing...just eating A LOT. Except HEADACHES. I have been getting headaches and I cannot stand them. They went away for a few weeks and they are back like every day. I read that it should subside in the 2nd tri but then resume again in the 3rd.....Headaches have always been the one pain, the one ailment I cannot bear so go figure I'd get this as my one symptom. They SUCK!

ashley agar - 13.6 hours ago
Ever notice that the more exhausted you are, the more a toddler will cause chaos! My son has been playing in the toilet, drawing on walls, pulling at the dog, just generally cranky. He must be pickin up on my 'Today sucks' vibe. aaarrrrggg. Thank goodness for nap time...for all!!

lacecop98 - 14.1 hours ago
Well I have to say that I am relieved that others have the headaches I do...wait that didn't sound right...I am sorry for those suffering as well but I am glad I am not abnormal! lol!! Today I am eating like crazy! Spicy Italian sub for lunch! I just want to go home & crawl in bed for a few days!!!

jessica-rn - 14.4 hours ago
Yeah 13 weeks! I too am suffering from horrible migraines.... last week it and ms was so bad I went to the er they said I was really dehydrated and gave me fluids and phenergan and pain meds and gave me prescriptions for zofran and phenergan but nothing for the headache pain and today its back and killing me! I hate headaches....

ashleyb2010 - 14.9 hours ago
So, I have got the headache today that everyone was talking about yesturday. :( On a much brighter note, I noticed that my pants were getting a little loose if I did not wash them every time after wearing them, so I thought what the heck, I will try on a smaller pair, and guess what... They are on, zipped, AND buttoned! YAY! :)

MrsEichler - 15 hours ago
My DH rented a cabin at the end of the month on the mountain to go snowboarding. We are going with a bunch of people. I wont be snowboarding but I will be playing outside in the snow with my 2yr old. Hopefully it will still be fun

carey-canada - 15.3 hours ago
LOL as a previous highschool teacher, I'll double warn you! Teen males have the highest accident rate of anyone! Enjoy your day either way :-)

newbb - 15.3 hours ago
Hello week 13 :) wow I made it:) and the great news is my spotting stopped 3 days ago :) Hope I'm not jinxing anything. Just hope it doesn't return:) Im having my NT scan tomorrow :) it will be my 4th ultrasound.. And another great thing is a quit smoking 4 weeks ago today:)

ashleyb2010 - 15.7 hours ago
Thanks Carey, I appreciate you sharing this story with me. The thing that makes me not want to go very badly is because the mountain has a ski bus day so there are about 4 billion highschoolers. So, good chances I will not go!

carey-canada - 15.9 hours ago
Ashley, I wouldn't do it. I am a very experienced snowboarder/skier and had a miscarriage on the mountain when a total idiot hit me from behind. I was only 5 weeks and very careful but he came flying from above, out of control and flattened me. You may be capable, but can you be sure everyone else is? Maybe you can try your little one on skis, or at the hill daycare and go for some spa time instead. Trust me, losing your baby is not worth it.

ashleyb2010 - 16.7 hours ago
Thanks Ashley for your thought. My husband was really curious to see what my 13 weeker mom friends had to say about the situation. I am still kind of up in the air, leaning towards not going, but still not 100 percent at this point, so any more thoughts or ideas are completely welcomed!!!

ashley agar - 16.9 hours ago
Ashley - personally I would pass. There are lots of things I'd love to do right now too (I'd so love a cold beer. haha) but I pass on it for the sake of the baby. Chances are nothing would happen, but on the slim chance that they do...yikes. I hear ya about wanting to resume as much of your regular life as possible, but maybe you could find something else you enjoy with the risk factor. Just a thought! Good Luck with your decision!

ashleyb2010 - 17.2 hours ago
Question for you ladies. I have the opportunity to go skiing this weekend, which is a hobby that I love and am pretty good at, I have been doing it for many years now, but my doctor said that it is not the best idea. I know that I could keep myself of easier runs, and the mountain that we would be going to is not a difficult mountain at all, sooooo, is it worth the risk? Do I go and have my last big hurah, or do I play it safe and send my hubby up by himself, and I stay at home with our two year old all day, by myself?

fairydust - 17.3 hours ago
I get bad headaches when I either dont drink enough water or if I dont eat regularly. Sometimes I get itfrom eye strain or stress or heat as well... I am also a migraine sufferer so it's pretty rough.

lacecop98 - 17.8 hours ago
Augustmommie-well I thought maybe I wasn't getting enough fluids but after keeping track of my intake...I get at least 64oz a day at work alone...they come whenever they want & stay as long as they want. Even the loratab the doc gave me barely takes the edge off. Sometimes they turn into migraines. Those run in my family...my mom suffered from them horribly, I get them, and now my oldest daughter gets them as well. I am hoping they will ease up soon. However it seems I may be coming down with a cold now cuz my throat is scratchy and I keep sneezing & blowing my nose. Maybe my headaches are more frequent cuz I am carrying twins. Who knows....:(

thankfultwo - 17.9 hours ago
Hello Ladies! I see just about everyone is being hassled by headaches..I always gets mines while I'm asleep so imagine waking up at 2:00a.m. complaining, they don't last long but I have to keep my eyes close until it leaves..

threeprettygirls - 18.1 hours ago
Hello week 13! I had my NT scan Friday, everything looks good! Phew. I'll be 38 next week so my odds where 1:103 I asked if she could tell the gender, and she said she had a pretty good guess- and I didn't want to know yet! We have decided to wait! After being so obcessed with this I go and change my mind! We couldn't stop talking about finding out afterwards and now we want to know again! Lol. So I guess we will ask at our 18 wk scan. Besides that silly stuff- I am wondering if anyone out there is dealing with any chronic pain issues prior o pregnancy? I have fibril myalgia and I am in so much pain. I need some relief. Any suggestions?

HEIDISMUMMY - 20 hours ago
with my last pregnancy my mum constantly said i was like her, i had a very similar pregnancy but when it came to birth my mum said her first was 18 hours, waters had to be broken and pushing stage was the quickest. for me my waters broke first thing, before any contraction, the labour was quick and the pushing stage took forever! i was 7 hours start to finish in the end so i suppose we dont always follow our mums but we both had big babies and similar pregnancies. either way its interesting to compare.

sunflower-j - 22.1 hours ago
irishdasies..... it means alot if your like your mum. im the same build as mine and we have had very similar pregnancies and labours. only difference is i was 6 pound 1 and mine were 8 pound and up. one very similar thing with my mum and i is that we both were 5 cms dilated and had buldging waters and didnt even know we were in labour. and then very fast births. i think im going to be screwed this time if my water breaks at home and im by myself

irishdaisies - 22.6 hours ago
Sunflower, i'm no expert but that sounds big to me!!! lol I'm hoping for a nice lil 6 pounder, nice small head to fit through the goal end lol. Am seeing my mum on Friday to break the news to all my family and i'm sure she said i was 7 lbs on time. I can't wait to ask a million questions as i'm assuming i will have her traits of pregnancy? We have very similar build etc. Wonder if that actually does mean anything? Off to week 14 today :)

sunflower-j - 1 days ago
i feel like i have missed a full week. yesterday when i had my nuchal scan the sono asked if i have big babies. well they are a good size but not too big. my first was 2 weeks early and he was 8 pound 8. my second was 15 days early and she was 8 pound. so no. not too big. i also told her how my partner and i had been doing temp charts so i would know when i was ovulating. and by my dates i am due on august 12. well she smiled and said she is glad i know my body cause by bubs size in the scan she bumped my due date up by 6 days. so i go to week 14 on thursday. feeling a little lost. but dont really mind missing a week. means im a week closer to meeting my bub

fairydust - 1 days ago
hi ! 1st day in wk 13 :) got my scan on Friday, I cannot wait :) :) :)

vl71 - 1 days ago
Hello week 13!!!! I went for check up yesterday and guess what! They booked me in for Csection already!!!! Can you believe that!!! I am so excited can't wait for Aug 2 aslong as I can stop eating and sty awake long enough that is!!!!

babymichael - 1 days ago
I have found that when I have headaches, I am usually thirsty. A glass of water (or two) and I am typically better... or too busy in the bathroom to worry about it!

alenasmommy - 1 days ago
I have been having headaches for the last 2 months.. my dr prescribed me tylenol 3.

Augusteleventh - 1 days ago
i nice hot shower helps w headaches too. And of course water :)

ashleyb2010 - 1 days ago
Sorry to all you mama's who are having bad headaches, I had a little one this weekend, but nothing bad at all so far! I am counting my blessings.

tk2 - 1 days ago
Week 13 yeah! I wish morning sickness would leave though. I couldnt hold anything down yesterday. Today I have been able to eat a little. But now I have a lovely headache. Oh what we go through for our babies

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Members in week 13:

AshleyAnn6 - 12 Aug 2010
Augustmommie - 12 Aug 2010
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