17 Weeks Pregnant: Week-by-Week Guide

    17 Weeks Pregnant: Week-by-Week Guide

    Congratulations! You are 17 weeks pregnant. At this stage of your journey, new developments are beginning to unfold. Explore our week-by-week guide to find out what’s in store for your baby and your body in week 17 of pregnancy.

    At 17 weeks pregnant:

    • Your baby is the size of a pomegranate.
    • You’re officially four months pregnant.
    • The countdown continues: you’ve got 23 weeks to go!

    What happens during the 17th week of pregnancy?

    • You’re both plumping up your baby is now developing the cute baby fat to keep warm and provide energy once they’re out in the world.
    • Baby brain you may be experiencing vagueness and memory loss called pregnancy brain, but at the same time, your little one’s brain is becoming active, working to regulate the steady pumping of your baby's heart, which is beating at a pace of 140 to 150 beats per minute.
    • Getting a taste for it — baby’s learning to suckle and swallow in preparation for that eventual first feeding.
    • Making a mark — this week tiny fingerprints are forming on your baby’s little fingers.

    What should I be feeling at 17 weeks pregnant?

    • You won’t be feeling sick, but now that you’re obviously showing, you’ll be the target of probably unwarranted belly touching/rubbing. Don’t be afraid to ask people to keep their distance if it makes you uncomfortable.
    • Week 17 is when some moms start to feel “quickening”, which is your baby’s very first movements. It might just be a twitch, and don’t worry if you can’t feel it just yet as it can happen any time between now and week 22.

    17 Weeks Pregnant Facts

    How big is your baby? Check out the chart below to find out!

    Baby Size at 17 Weeks
    Baby Weight 5 ounces
    Baby Length 5 inches
    Baby Size Comparable to the size of your palm

    Week 17 Pregnancy Symptoms

    During week 17 of pregnancy, your body is adjusting to the new life it’s supporting. As your baby changes, you will too, and there are certain pregnancy symptoms you may experience at this time. Keep these week 17 pregnancy symptoms on your radar:

    • You may not normally snore, but as a side effect of the pregnancy congestion, you’ll probably be snoring like a tractor.
    • Sore back or sciatica can cause you pain at this stage. You’re growing rapidly and the extra weight and stretched muscles can hurt. Try yoga or Pilates to get movement into the area, and a heat pack or a support cushion on your chair.
    • You may get stretch marks as your tummy grows.
    • If you have sharp pains or even dull aches low in the abdomen it can be from the round ligaments stretching around the uterus.
    • There will still be the chance of headaches and dizzy spells hang in there!


    Being 17 weeks pregnant is an important time for you and your baby. Get advice on how to adjust to this new stage.

    • It’s time to change your exercise regimen. While it is generally good for you and your baby, there are certain moves that you’ll want to avoid after the first trimester: contact sports, activities that include any jarring movement, moves that require you to lay flat on your back, and sports that raise your risk of falling or hurting your growing belly. That still leaves lots of great options—check out a few now.
    • Even though you’re eating for two, you’ll want to try to manage your weight during your pregnancy. Obesity is a risk factor for pregnancy complications, such as gestational diabetes and preeclampsia. It also increases the risk of having a high-birth-weight infant—and a more difficult delivery, but so is being underweight. Know your target weight and learn more about managing your weight.
    • Your pregnancy hormones can play havoc with your ligaments and even your mouth. Seeing a dentist during your pregnancy is a good idea to detect issues like loosening teeth and periodontitis.

    Week 17 Checklist: Plan Your Pregnancy

    Be prepared. Explore our pregnancy checklist below and add these items to your to-do list this week.

    To-Do Complete
    Schedule a dentist visit
    Book a prenatal massage
    Decide if you want to know you baby’s gender at the next ultrasound

    If you’re interested in learning more about your pregnancy, explore our resources on dealing with cravings and pregnancy nutrition or read ahead about week 18.