17 Weeks Pregnant
Summary
Size
turnip
Length
13 cm
Weight
140 g
Until due date
23 weeks
17 / 40 week
%43
What's Happening With Your Baby
Fat tissue is starting to build up under the baby's skin. Sweat glands are developing. The umbilical cord is thickening and strengthening. The heart is now regulated by the brain.
What's Changing For You
Your sense of balance is shifting as your centre of gravity moves forward. You may feel dizzy. Dreams can become vivid.
To Do This Week
Put the heels away; loss of balance becomes more likely from here.
Don't stand up quickly — a drop in blood pressure can make you dizzy.
Put a pillow between your knees when lying on your side to take the load off your back.
Frequently Asked Questions
How many months is 17 weeks pregnant?
Week 17 of pregnancy falls in month 4 and in the second trimester. Pregnancy months don't run in neat four-week blocks, so the week-to-month conversion rarely lands on a whole number — which is why pregnancy is tracked in weeks.
How big is the baby at 17 weeks?
At 17 weeks your baby is roughly the size of a turnip: around 13 cm long and 140 grams. These are averages; clear variation between babies is normal, and what matters is the growth curve your doctor is tracking.
How long is left at 17 weeks pregnant?
Assuming a 40-week pregnancy, you have around 23 weeks left at week 17. Most births happen between weeks 37 and 42, so a due date is a range rather than a fixed day.
What should I watch out for at 17 weeks?
Put the heels away; loss of balance becomes more likely from here. Don't stand up quickly — a drop in blood pressure can make you dizzy. Put a pillow between your knees when lying on your side to take the load off your back.
Track your pregnancy week by week
Baby Wallie brings your baby's weekly development, your health logs and AI-powered nutrition, sleep and breathing programs into one app. Free for 7 days.
Related Guides
When To Seek Care Immediately
Whatever week you are in, contact your doctor or the nearest health facility without waiting if you have: vaginal bleeding or fluid loss, severe persistent abdominal pain, a severe headache, blurred vision or flashing lights, sudden swelling of the hands or face, a fever above 38 °C, burning on urination with fever, persistent vomiting, fainting, or — after week 28 — a clear reduction in your baby's movements. In these situations reach real medical care rather than an app or a web search.
This content is for informational purposes only and does not replace medical advice. Always consult your doctor or midwife about your own or your baby's health.