Day 112 of 280 · 16 weeks
Pulling faces
Last reviewed · 3 min read · 7 sources · Plain-text version
Sixteen weeks. Your baby is making faces nobody means yet, a growth spurt is coming, and today you take the first of a weekly photo series that's just for you.
- Size this week
- about the size of an avocado
- Length this week
- around 11.6 cm from head to bottom

Sixteen weeks. A new week, a new fruit, and the first day of a small habit you'll be glad of later: one photo, same spot, every week.
Your baby

Around 11.6cm from head to bottom, the size of an avocado (NHS). In US measures, at 16 weeks the baby is about 4 to 5 inches long and weighs almost 3 ounces (OWH). Your baby is starting to pull faces, but a smile or a frown is random at this stage, with no muscle control behind it yet (NHS). The hands can form fists and may punch around inside the womb (NHS); you won't feel any of it yet.
Your body
Another growth spurt is about to start, and kicks may be felt from week 17 onwards (NHS). "May" is doing real work in that sentence; the OWH's version is simply that you may feel movement before the second trimester ends (OWH).
What does change visibly from here is your shape. The second trimester is when the abdomen expands, and stretch marks, carpal tunnel syndrome and darker patches on the face are common alongside it (OWH). The NHS says you'll probably have put on some weight over the past few weeks (NHS). A photo a week turns that from a vague worry into a record you chose to keep.
Try today
The first bump photo
Time: 3 minutes, then 1 minute a week
Pick a spot with a plain wall and daylight, and stand side-on. The same spot every week is what makes the series work.
Wear the same top each time, something fitted enough to show the shape. Keep it, washed, for the next 24 weeks.
Take the photo, and name the album by week: "16 weeks" today, "17 weeks" next time.
Set a weekly reminder for this day and time, so the series doesn't depend on remembering.
Back the album up somewhere that isn't only your phone.
Make it work:Leave the scales out of the frame. This is a record of a shape, not a measurement; the weight conversation belongs at your appointments (NHS).
Watch for
Normal
no movement you can feel yet; kicks may start from week 17 (NHS).
Call your provider
, later in pregnancy, if after 28 weeks you count fewer than 10 movements within two hours (OWH); for now there is nothing to count.
Normal
slightly swollen hands and feet by the end of the day, which is on the NHS's list of common symptoms (NHS).
Call your provider
or seek care immediately for extreme swelling of your hands or face (CDC).
Normal
moods that swing, which the NHS lists among the symptoms that can carry on from earlier weeks (NHS).
Call your provider
as soon as possible if you think you have depression; it is common and can be treated (CDC).
For you
These photos are for you, not for anyone's feed. You may find you like them more at the end than you expect to now: most skin colour changes of pregnancy fade within a few months after birth (MedlinePlus), and the series will be the only place that shape exists.
If you're the partner: you take the photo. Hold the phone low, at bump height, and don't post it. If you'd like to share one, ask, every time; a yes about week 16 is not a yes about week 30.
Sources
- NHS. "Week 16." Week-by-week guide to pregnancy, Best Start in Life. https://www.nhs.uk/best-start-in-life/pregnancy/week-by-week-guide-to-pregnancy/2nd-trimester/week-16/
- NHS. "Week 20." Week-by-week guide to pregnancy, Best Start in Life. https://www.nhs.uk/best-start-in-life/pregnancy/week-by-week-guide-to-pregnancy/2nd-trimester/week-20/
- Office on Women's Health. "Stages of pregnancy." U.S. Department of Health and Human Services. https://womenshealth.gov/pregnancy/youre-pregnant-now-what/stages-pregnancy
- Office on Women's Health. "Pregnancy complications." U.S. Department of Health and Human Services. https://womenshealth.gov/pregnancy/youre-pregnant-now-what/pregnancy-complications
- Centers for Disease Control and Prevention. "Urgent Maternal Warning Signs and Symptoms." HEAR HER campaign, 2024. https://www.cdc.gov/hearher/maternal-warning-signs/index.html
- Centers for Disease Control and Prevention. "Symptoms of Depression Among Women." Reproductive Health, 2024. https://www.cdc.gov/reproductive-health/depression/index.html
- MedlinePlus. "Skin and hair changes during pregnancy." National Library of Medicine. https://medlineplus.gov/ency/patientinstructions/000611.htm
This guide is general education that summarizes published research and guidance from groups like the American Academy of Pediatrics, the CDC, and the WHO. It isn’t medical advice, and every child develops on their own timeline. Your pediatrician knows your child; if something feels wrong, call them. In an emergency, call 911.
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