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You are 4 weeks pregnant.

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Born & Birth stories

By the end of this week, you will most likely be expecting your period to come. However, if you are pregnant your period will most likely not come. Some women do experience some spotting or even a light period. It is also possible to have your period and still be pregnant! If you do miss your period, you might begin to think about a possible pregnancy! Home pregnancy tests are not as reliable as blood tests at this point. A blood test will detect a positive pregnancy test at this point because the hormone, human Chorionic Gonadotropin (hCG), has been secreted.

At this point in your pregnancy, your growing baby is very small and is about 1 mm in length. One mm is about half of the size of a typed letter `o`. You are still not showing at all and you have not yet gained any weight. Even though you are in the very early stages of your pregnancy, many great changes are occurring. The implanted embryo is embedded deeper in the lining of your uterus and the amniotic cavity is beginning to form. The placenta is also forming and will be delivering oxygen and nutrients to your developing baby. This week the blastocyst begins to transform into an embryo. The embryo will have three different layers with different types of tissue. The inner layer will form the lungs, liver, digestive system and pancreas. The middle layer will become the skeleton, muscles, kidneys, blood vessels and heart. The outer layer will become the skin, hair, lenses of eyes, tooth enamel and the nervous system.

A clear result. If you tried it a few days ago and the result wasn't as convincing as in this picture, try it again now to be sure!

Even though you have not yet gained any weight, you need to be prepared to gain weight during pregnancy. Gaining a healthy amount of weight is crucial for the health of both mother and baby during pregnancy. You can control your weight gain by eating healthy and nutritious meals and snacks. During pregnancy you are eating for two, but that does not mean you have to eat twice as much!

Your body now starts producing a hormone which stops you having your period, and it shows in your urine.

It is now possible for your pregnancy to show up on blood tests, and even home pregnancy tests.

About 1 in 3 women have a light bleeding at this point. This happens before you would expect your period to arrive. Unless accompanied by cramping, backache or increased bleeding, a small amount of blood being discharged should be considered as implantation bleeding which is nothing to be concerned about.

At this point, your baby is still not visible to the naked eye.

See also:
Ovulation Calendar (When can you do a home pregnancy test?)
Home pregnancy tests

Comments on week 4

Comments 1-49 of about 1554 from week 4
2 messages have been added in the last 24 hours.
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sn2bmomof4 - 4 days ago
Im bacK this will be number 5. - 4 days ago
Just found out today. I jave two boys 8 and 11. I didnt want anymore children lol. I have endometriosis and thought I couldnt get pregnant anymore. I used no protection since my son was born and he is eight. I had procedure for endo abt five years ago. Pain started coming back so about the past seven months I went on birth control to stop cramps. I stopped bc in march. Here it is May Im pregnant. Hopefully its my girl. Ive been very tired. Been having cramps like cycle is coming on. Breast are sore as if period is coming on. Headaches on and off. But really everything feels like first day of my period. I did start getting bloated earlier than normal. So happy but so sad about starting over.

WilliamsonBabies - 5 days ago
I have been experencing lots of morning sickness and heartburn. I wake up with a lot of energy but by mid day I am completely wiped out and ready for sleep!!

WilliamsonBabies - 6 days ago
Hi ladies!! I got my BFP on Friday after 3 months of TTC. This will be #7 for DH and I. I was on here with my last pregnancies. We have 3 boys and 3 girls and all of them are very excited about having a new baby in the family!! I am due Jan 23rd 2016!

donnad - 8 days ago
Got a BFP yesterday this is my 4th we are excited.

ashpeababy - 12 days ago
Hey Ladies!! This is my 3rd time on this site, just got my BFP with baby #5 yesterday and we couldn't be happier!! EEK! I am 11dpo today, still 3 days before AF was due! Cant believe I found out so early! Glad to be here again and cant wait to get to know you all :)

clairemumof6 - 12 days ago
Hi! I'm Claire, just had BFP for baby no 7! Feel free to add me on Facebook, I've set up a secret January babies group, it's Claire Richardson and I have bright red hair in my profile pic :) looking forward to sharing this journey with you all

babykhan - 22 days ago
Hi everyone. How you all doing? well i just got bfp on home pregnancy tests. According to my cycle it looks like my due date is jan. 8. 2016. I will be calling my doc for the first appointment. This is our 4th and finial baby. I have 2 girls and 1 boy already.

wasted-space - 28 days ago
Hey all! Just got my BFP last night! This is number 3 for me. I have. 6 year old and a 2 year old. Due Jan 2nd 2016!

Healthymum - 35 days ago
Hi everyone and cogratulations to you all. Well I found out at 3wks1day that our number 3 is on the way! nearly week 5. this will be a two week early bub, 3rd c section, just in time for christmas! Hopefully by the 9th December- due in the 23rd December, another playmate for my 2 DD's. Aged 6 and 15months.

jory927 - 35 days ago
Congrats @steph and @mamadown!!

MamaDownOZ - 36 days ago
Hi Ladies! Just thought I'd intro myself, I'm almost 5 weeks pregnant. I found out 4 days ago as I had been dizzy and gassy for a few days. I'm so excited but trying not to get too ahead of myself as I've had 2 early losses in the last few years. This will be our 2nd child if everything goes ok, we have a 5yo girl. Looking forward to joining you all on your journeys xx

weber3 - 37 days ago
@step baby congrats! #3 is a challenge but soon much fun. All the best to you on thisjourney.

Stephbaby3 - 37 days ago
WowZa! Just took a test today and it was positive. I'm so nervous. This baby wasn't planned but my husband and I will embrace our third child! According to my the first day of my last menstral period my due date is Christmas day!! Exciting!!

weber3 - 42 days ago
just a few more hours and then in week 6 yayyyy!!!!!

weber3 - 42 days ago
@sarah awwww thanks. Yeah definitely something a guy can't understand

sarah4186 - 42 days ago
@weber3, it's hard for others who haven't been pregnant to understand what our bodies go through while pregnant...we have a precious life growing inside of us. I have been a little hormonal but not bad but it's most certainly to be expected. You are a great person, your husband knows that, it's just hard maybe for him to understand what your body is all going through.

weber3 - 42 days ago
I am so incredibly hormonal. saying lots of things I wish I didnt. and hubby doesn't believe in hormonal things just thinks I am a jerk.

weber3 - 42 days ago
@Sarah I am totally into symptoms and aNY instantiating don't feel anything I panic. trying to relax and enjoy the miracle of being pregnant at this age for now.

sarah4186 - 43 days ago
@weber3- thank you for your prayers for a healthy pregnancy/baby...same goes to you too! I know because of what happened before, any little discomfort no matter how small, I get scared.

sarah4186 - 43 days ago
@Jory927- I'm so happy that you're pregnant too! I remember your name in the trying to conceive area awhile back when I was on there. 😊

weber3 - 43 days ago
@sarah sorry for your loss. Being pregnant after a loss is such a roller coaster ride of emotions. Praying this pregnancy gives you a take home baby.

jory927 - 43 days ago
@sarah4186 I'm so happy for you!! Congrats!!

sarah4186 - 43 days ago
I had to take a break from here for awhile after my miscarriage in February just emotionally overwhelming. My husband and I just found out we are expecting again and I'm praying that this baby will be healthy, safe and no issues. I'm scared and excited at the same time.

weber3 - 44 days ago
@aussiemom I always get all day sickness but I never puke. Just gag. I remember clearly last pregnancy just about everyone in our group got it right at week 6. Almost there!!

aussiemum86 - 45 days ago
Yes i have felt dizzy more so if i move quick or bend over a lot haven't really felt queasy yet! Hope i do soon just for peace of mind. Did any of you ladies have bad morning sickness with your other pregnancies? With my first boy i had a little bit of a night around 11pm with my 2nd boy i was lucky and only felt tired and dizzy he was a good little man to carry quite an easy pregnancy. I had restless legs with both pregnancies so hoping i miss out this time.

weber3 - 45 days ago
I felt very dizzy tonight after work and a bit queasy. Not sure if my supper agrees with me right now but it's all good. Usually don't feel like this so early. Symptoms are good though. Reassuring.

jory927 - 45 days ago
Yes!!! I've had dizziness start today, so glad I'm not the only one! Aside from that and having to take an afternoon nap I feel great.

aussiemum86 - 45 days ago
Thanks everyone they all seem good for now. Just very hard to handle sometimes. Hows everyone feeling? Is anyone starting to get any sickness or anything? I've just started feel quite dizzy but apart from that I don't feel pregnant.

madelynsmom519 - 46 days ago
@aussiemum86 i hope there's no drama for you and your family!!

weber3 - 46 days ago
@aussiemum yeah no drama!! Hoping this for you too.

jory927 - 46 days ago
@aussiemum86 Congrats on you bfp! I'm due 12/6 so at least our due dates are close! I have a 19 month girl so juggling a toddler and newborn should be quite the adventure!

jory927 - 46 days ago
@madelynsmom519 that's awesome, I'm so jealous!!! Wish I could fast forward a few weeks!

aussiemum86 - 46 days ago
@madelynsmom519 wow how lucky are you wish i found out i was 8 weeks pregnant hate finding out so bloody early you feel your pregnant for ever and I just want to tell all my friends and announce it. Both sets of parents brothers and sisters know ☺ @ weber3 thanks heaps I've got over being in shock and actually looking forward to it. Definitely my last so I'm going to try and enjoy this one out last pregnancy we had some family drama with in laws so hopefully no drama and a smooth ride ☺ congrats to you both also

madelynsmom519 - 46 days ago
@weber3 lol those past few weeks... I didn't realize I was pregnant! Lol.. pretty weird when I found out I was pregnant with my daughter I found out on the day AF was supposed to show... and this time it's a month later

weber3 - 46 days ago
@aussiemom congrats on your pregnancy!!!

weber3 - 46 days ago
@madelynsmom that's awesome! 8 weeks!!!!!!You made it past those first few weeks that drag so slowly. Almost out of the first trimester!!!!!

aussiemum86 - 47 days ago
Ha ha thanks @madelynsmom519 still in shock i have an 18 month old and a 6 year old. So going to be busy ☺

madelynsmom519 - 47 days ago
@aussiemum86 woo hooo congrats!!!!

aussiemum86 - 47 days ago
Hi guys! I just found out that we are expecting baby #3 I had my last period march the 7th lasted for about 2 days that's how mu periods work I don't bleed for long at all. We were planning on having a bub later on in the year so it was a bit of a shock to see 2 lines come up on a test. The site said I'm due around 12th dec ☺ i still think im shaking ha ha good luck to everyone expecting and trying to. I love to hear from other mummies who are due around me ☺

madelynsmom519 - 47 days ago
@weber3 I just got back to the Dr's... I am due Nov17th, which puts me at 8 weeks pregnant. 2nd trimester needs to come soon!

weber3 - 48 days ago
@jory yayyyy. What a long week. One down..... 37 more to go. @madelyn'smom I can't wait to hear how your scan goes. I am guessing you are a little farther along than four weeks.

madelynsmom519 - 48 days ago
@jory927 thank u :) Dr's appointment today! Hopefully I'll get my due date set

jory927 - 48 days ago
@weber I read we have the same Edd! Yay! Happy 5 weeks!

jory927 - 48 days ago
Congrats @madelynsmom!!!

madelynsmom519 - 49 days ago
@weber3 thanks. I feel your pain. I can't wait till 2nd trimester comes also. I gag at the sight of my husband's cooking and I can't stand the smell of my favorite scented candle!!!! So miserable :(

weber3 - 49 days ago
@madelynsmom congrats on your bfp!!!

weber3 - 49 days ago
Am I really still in week 4 this has been the longest week of my life. I have known I have been pregnant for 10 days and I am only in week 4 second trimester hurry up

weber3 - 49 days ago
@jory927 I was tired for the first few days but not anymore and I am not peeing any more than normal. Sometimes I cramp which makes me worry but then I worry when I don't cramp lol. I have a midwife appointment second week of may. This has been the longest week ever. Can't believe I am still only in week 4.

madelynsmom519 - 50 days ago
Got my BFP today!!! Been very nauseous for a few days now. Going to see my dr on Monday to see how far I really am since my last AF was in Feb 10.

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Members in week 4:

    The due date from members in week 4 is from Sunday 24 January 2016 up to & including Saturday 30 January 2016. See the full timeline here

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