What to expect in your First Trimester of pregnancy | Pregnancy Week-by-Week

  • Published on Mar 26, 2018
  • Congratulations! You are pregnant! Over the next eight weeks of your first trimester, your baby will grow from about the size of a poppy seed to a mushroom. And you’ll go through a lot of changes, too. This week-by-week guide to your first trimester will take you through all the developments, symptoms and things you need to start thinking about. (And don't miss our videos for your second trimester: ruclip.com/video/IPj4dJnP85o/video.html and third trimester: ruclip.com/video/lpDW00nQhUo/video.html)
    Want more pregnancy info?
    Here are the time codes to get to the topics that matter to you most right now, based on how many weeks pregnant you are:
    0:13 - 4 weeks (Topics covered: Early symptoms of pregnancy, pregnancy hormones, nausea, bloating, exhaustion, implantation bleeding, precautions you need to take during pregnancy)
    1:49 - 5 weeks (Topics covered: Pregnancy hormones, food cravings or aversions, morning sickness)
    3:15 - 6 weeks (Topics covered: Constipation, alcohol consumption, how much caffeine you can have, dating ultrasound)
    4:54 - 7 weeks (Topics covered: Growth of baby, dealing with nausea, pregnancy massage)
    7:27 - 8 weeks (Topics covered: Picking a health care provider, miscarriage, nausea, what cleaning products are safe, acne, glossy hair)
    9:48 - 9 weeks (Topics covered: Baby heart beat is strong enough to be heard, baby’s genitals are developing, pregnancy hormones, dealing with fatigue, maternity clothes, weight gain)
    11:41 - 10 weeks (Topics covered: Fetal development, vivid dreams, growing uterus, pain medication that’s safe during pregnancy)
    13:41 - 11 weeks (Topics covered: Fetal development, genetic testing, exercise during pregnancy)
    16:34 - 12 weeks (Topics covered: Fetal development, risk of miscarriage, telling others about your pregnancy, maternity clothes)
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Comments • 1 252

  • Jasmine P
    Jasmine P 4 hours ago

    Omg im 5 weeks....starting to get excited!! Shout out to the expecting mothers!!!

  • Nwaba Lisa
    Nwaba Lisa Day ago

    I am 7 weeks & I can't wait to hear baby's heartbeat & start sharing the news with family & friends at 12 weeks

  • Rand Rand
    Rand Rand Day ago

    5 weeks with #4 over here 🙋🏻‍♀️ you would think I would know all this already.. but no I’m back here watching pregnancy videos again!

  • MissBriannaJay
    MissBriannaJay Day ago +1

    I found out this Saturday that I’m pregnant and I believe I’m 5/6 weeks, this is my first baby, me and my fiancé are super excited! Pray for me and send me love 💕 EEEEP

  • Build for Glory
    Build for Glory 2 days ago

    2nd semester of nursing school. Anyone else🤔🤔🤔

  • Haley Brooks
    Haley Brooks 2 days ago

    week 9. this shit ain’t no joke 😩😩 I’m super tired and nauseous all of the time. one of the most recent symptom is heartburn and loss of breath. I also feel and look like i’ve gained 500 lbs already. this better get easier 🥺

  • Virginia Torres
    Virginia Torres 3 days ago

    No to the flu vaccine, it is harmful to baby!!!!

  • ok
    ok 3 days ago

    Im going on 10 weeks pregnant. Yay.

  • Marvin Barrera
    Marvin Barrera 3 days ago

    My Girlfriend is 5 weeks but we had to go to the ER last Friday because she was bleeding (def not spotting) the doc said everything looked normal but she started cramping and bleeding again today and this time with clots. Did this happens to any of you Mama's out there? Seriously need advice because my girlfriend and I are worried sick

  • Another soul
    Another soul 3 days ago

    I’m a virgin, here for the awesome animation.

  • Sarah Pfefferle
    Sarah Pfefferle 3 days ago

    I had nausea like every so often on and off it was bearable and ginger candy stopped it but THE SMELLLLLS of ANYTHING wow they made everything so much worse I would go grocery shopping and gag because I smelled ham it made the morning sickness feel like nothing

  • Shamym Hassan
    Shamym Hassan 4 days ago

    I had two miscarriage which were very hard for me take😭and am now 7wks pregnant.... prayers are welcomed.. thank you

  • Angel Baby
    Angel Baby 4 days ago

    11 weeks today! Didn’t have nausea very much unless I didn’t eat. So grateful for that.

  • Ria X
    Ria X 5 days ago


  • Madison Lion
    Madison Lion 5 days ago +1

    I just found out I’m pregnant please pray for lil bean and I. I’m a first time momma I’m scared but I’ve got this. God has a way.💜🙏🏼🧿🧚🏼‍♀️💖

  • Mazie Smith
    Mazie Smith 5 days ago

    Why am I even watching this I'm 13 and haven't even gotten my first period😂😂

  • Lisa Xiah
    Lisa Xiah 6 days ago

    I'm 8 weeks pregnant and I have brown discharge...is it normal?I'm scared I don't want to lose my baby..if someone know about it answer me pls

    • Mrs S
      Mrs S 3 days ago

      Lisa Xiah hey it’s normal I also had it. But if it continues to turn red then see your Dr asap.

  • Briyene Duterne
    Briyene Duterne 6 days ago

    Going on baby # 3, first trimester still no sign of morning sickness for the very first time because I had it with the last 2 pregnancies. Anyone else have similar problem??

  • Odd Unikorn
    Odd Unikorn 6 days ago

    6 weeks Pregnant!! 🙏 for healthy pregnancy and baby ❤🤰🏾☺

  • Angel Mitchell
    Angel Mitchell 7 days ago

    I'm 7 weeks and 5 days pregnant with unidentical twins.... First time pregnant to

  • Isabella Ratnikov
    Isabella Ratnikov 7 days ago

    Im 12 weeks pregnant with zero symptoms. I wonder if the second trimester will be different..

  • Ella Poblete
    Ella Poblete 9 days ago

    I’m 6 weeks pregnant and this is my first time will have a baby 👶🏼♥️

  • Beatriz Gonzalez
    Beatriz Gonzalez 13 days ago +1

    My fiancé & I have been together for 6 years and we finally started trying last month 🤞🏻 I hope I’m pregnant 🥺

  • Jarisbeth Pinilla
    Jarisbeth Pinilla 13 days ago

    I’m 6 weeks and 5 days & I’m very blessed! Praying everyday

  • Sam Ahmed
    Sam Ahmed 14 days ago

    The animation is lovely ❤️

  • Dani Ames
    Dani Ames 14 days ago

    Some misinformation in this video. Heads up!

  • Mara Vela
    Mara Vela 14 days ago +3

    Hey dolls! Jus found I’m expecting. I’m 5 weeks today but I have had 3 miscarriages. Hopefully it all turns out fine. Congratulations to all the new mommies 🌸 #LetsGoMommies

  • karla zafra a.
    karla zafra a. 15 days ago

    i am 5-6 weeks pregnant and lemme tell ya, morning sickness is REAL. it is the MOST aggravating thing ever ;( i’ve lost about 7 pounds because of it and the whole thing about having a super sense of smell is SOO TRUE i was in the hospital and i could smell a bag of doritos from the other side of the room while my hubby and his sister couldn’t smell anything!!! all in all, i’m super duper excited for this baby :) wish me luck!!

  • Kristianna
    Kristianna 15 days ago

    I don't know how pregnant I am I'm waiting to get insurance its stressing me out I want to go to the doctor to make sure everything's okay. I have pcos and scared of health problems. Prayers for healthy pregnancy and baby

    • Queen Vanessa
      Queen Vanessa 13 days ago

      Kristianna go to the doctors! Apply for health insurance, usually the health insurance will cover those past cost. The baby and you come before money...

  • Dydy Senpai
    Dydy Senpai 15 days ago +1

    36 weeks. 2020

  • Castania Monet
    Castania Monet 15 days ago +1

    im 8 weeks and im SO fatigued its really not even funny...and i work a full time job that includes standing and walking the whole time!!! im also nauseous but not throwing up thank god!! i feel like im near the peak of sickness which makes me happy bc its not too bad

  • Michael Watson
    Michael Watson 15 days ago

    animation is fantastic.

  • allthingschris
    allthingschris 16 days ago +1

    5weeks. Supper excited but also very fatigued 💙💗

  • Abstract Tacoria
    Abstract Tacoria 16 days ago

    I am sorry for sharing but it surely has really helped me quite a bit average $598 everyday and can help others too. Here's the web site: *FunOnli neW o rk .c o m*

  • Lilian Mueni
    Lilian Mueni 16 days ago

    Naah I'm not pregnant 😤

  • Eman Ghazal
    Eman Ghazal 16 days ago +1

    Any mommas expecting in August 2020? ♥️🎀

  • xoxolucyyy
    xoxolucyyy 16 days ago

    My period was suppose to come December 28th, and still has not arrived. I’ve take 4 pregnancy tests & all of them turned out negative . If I go buy this first rule , I’m 6 weeks pregnant based off my last period , so it should show on urine test right? However with my son , his due date was 2 weeks later bc it took longer to actually implant , so it didn’t go based on my period.... any other moms go through this?

    • Queen Vanessa
      Queen Vanessa 13 days ago

      xoxolucyyy actually didn’t go through that. Maybe your the rare percentage that can’t find out on a urine test and instead need to give blood

  • Crystal Polk
    Crystal Polk 16 days ago

    I been feeling some symptoms.

  • isac bowen
    isac bowen 17 days ago

    That sex position tho

  • Brooklyn Shaw
    Brooklyn Shaw 17 days ago +4

    Just took two pregnancy tests this morning- both came out positive! Such a shock that I never saw coming but I’m so excited. ❤️

  • James Velazquez
    James Velazquez 17 days ago +1

    my girlfriends pregnant. Also my birthday in the 8th :)

  • vampire narutofan
    vampire narutofan 18 days ago +4

    I'm 7weeks 4 days no throwing up yet but eating like a pig especially in Christmas occasionally nausea and lots of peeing 🤣

  • Gift Mary
    Gift Mary 18 days ago

    I hope upset stomach will not affect my pregnancy

  • Gift Mary
    Gift Mary 18 days ago

    I am pregnant 8 weeks now my stomach is upset I really tire of it

  • arianna luna
    arianna luna 18 days ago

    I CRAVE coffee but I don't drink it cuz I feel any amount of caffeine will effect my baby I don't want my baby to be hyper from being made out of caffeine 😂

  • arianna luna
    arianna luna 18 days ago

    I got the flu while pregnant first trimester and it hella sucked but I'd rather go thru that than get a flu vaccine

  • Malaika H
    Malaika H 18 days ago

    Not even pregnant.. but hoping to start trying in the summer.. I'm scared as hell

  • Zoe Wowiee96
    Zoe Wowiee96 18 days ago

    Just found out I'm pregnant I'm so happy mashallah what a beautiful gift from Allah swt

  • Kelsie Nicole
    Kelsie Nicole 19 days ago +1

    I’m 6 weeks pregnant and I’m just waiting for the nausea to go away

  • Kylee wyckoff
    Kylee wyckoff 19 days ago +9

    Just found out I was pregnant the first day of 2020 I’m young and scared I’m not sure if I can keep my baby

    • Haley Brooks
      Haley Brooks 2 days ago

      it’s okay girl. whatever you decide to do will work out. I’m young and pregnant too. It’s really no joke. I’m keeping the baby but that doesn’t mean you have to. It’s whatever feels right for you. I wish you all the best ❤️

    • Austin Richards
      Austin Richards 18 days ago +1

      Kylee wyckoff omg I think I am too I’m 19

    • Tanayia Faber
      Tanayia Faber 18 days ago

      How old are you ??

  • Christine Sibug
    Christine Sibug 20 days ago +1

    i really love this video. im in my 6 weeks now .thank you for this

  • Alura DeathWing
    Alura DeathWing 20 days ago

    who else had to pee really bad as she says you will pee more often XD Just found out i was preggo a few days ago and now i cant stop peeing lmao

  • bryanna steinhoff
    bryanna steinhoff 20 days ago +1

    Why am I watching this? I am 39 weeks pregnant😂

  • kelly caballero
    kelly caballero 20 days ago

    So sorry if this is tmi! Ok so me and my bf had unprotected sex and 5 days later my period came a week early. My period is usually heavy heavy with a lot of blood clots and this time it was a lot lighter and mild bleeding with only 2 small blood clots and usually my period last 5/8 days and this time it lasted 3 /4 days. I’ve been a little nauseous and been cramping mildly and I’ve been EXHAUSTED I had really bad insomnia and would be lucky to sleep 6 hours and now I’m sleeping 10/15 hours a day and I HAVE to take a nap ... is there any chance I might be pregnant?? It’s been about two weeks since we had sex

    • Mae Stephenson
      Mae Stephenson 17 days ago

      Take a pregnancy test, that’s the only way you’ll know. If you had sex, there is a chance you’re pregnant. I doubt you really want strangers on the internet speculating about your sexual health, though! Call your doctor.

  • Mercy Chepi
    Mercy Chepi 21 day ago

    I have some major baby feaver right now but I know im way too younge for that responsibility at 18

  • caketin cosplay
    caketin cosplay 21 day ago +1

    Have you ever watched something like this and just hold your stomach and think
    'I might have a life in here one day'
    Because I have please don't say I am the only one 😂

  • Gamze Yilmaz
    Gamze Yilmaz 21 day ago

    Im 18 & im 5 weeks pregnant, ive been feeling really sick and bloated, ive been going hospitals they have been making me wait for over 2 hours, i went to my gp they told me i had to do self referral, unfortunately my nearest hospital doesnt deal with pregnancies as good, im 5 weeks pregannt as i said and ive just recieved a letter for next week so when im 6 weeks im going to see a doctor for the first time, i hope everything goes well for all you mommies & i hope the hospital actually gives you the best service you need❤️

  • Erin M
    Erin M 21 day ago

    Did anyone laugh at the bloating and gas at 3:36?

  • Loe Siff
    Loe Siff 22 days ago

    First signs of pregnancy were the exact same as PMS 😂 only tested because my period was a week late!!

  • Angel Atomate-O’Connor
    Angel Atomate-O’Connor 23 days ago +21

    I watched this on a whim 3 weeks ago and I just found out that I’m actually pregnant 😭😭🤗🤗