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    21 weeks pregnant: Your guide to this week of your second trimester

    Updated 28 July 2023 |
    Published 24 February 2019
    Fact Checked
    Medically reviewed by Dr. Angela Jones, Obstetrician, gynecologist, and attending physician, Jersey Shore University Medical Center, New Jersey, US
    Flo Fact-Checking Standards

    Every piece of content at Flo Health adheres to the highest editorial standards for language, style, and medical accuracy. To learn what we do to deliver the best health and lifestyle insights to you, check out our content review principles.

    From your growing pregnant belly to Braxton Hicks contractions, here’s the lowdown on being 21 weeks pregnant.

    At 21 weeks pregnant, you’re in your second trimester and about halfway through your pregnancy now (as pregnancy is considered to be full term if your baby is born between 39 weeks and 40 weeks and six days). While no two pregnancies are the same, some people report feeling pretty different once they enter the second trimester. For example, your symptoms may change, you may feel a bit more energetic, and you’ll likely notice that your bump is growing

    This can be an exciting time but also a little daunting. As you check off the weeks of your pregnancy, you may be mentally preparing for your baby’s arrival more and more. While your symptoms may have changed, your body is still undergoing some major developments. To help you understand what’s going on with your body and your baby at 21 weeks pregnant, a Flo expert outlines some of the things you might experience. 

    Your baby at 21 weeks pregnant

    Baby can suck 

    At 21 weeks pregnant, your baby’s