At 42 weeks pregnant (third trimester), your baby is about the size of a watermelon. Here's what's developing and how you may feel.
Baby this week
size of a Watermelon
~20.5 in, 8.2 lb
Week 42
Welcome to week 42. Your baby is growing fast and your body is changing. This week we cover development milestones, common symptoms, and what to prepare next as you move through your third trimester.
Ask your provider
For your partner
Practice the hospital route, install the car seat early, and keep your phone charged. You're on call now.
This week — to do
At 42 weeks, your baby is about the size of a watermelon — roughly ~20.5 in, 8.2 lb. Size and growth vary between babies; your provider tracks your baby’s growth at prenatal visits.
42 weeks is roughly 10 months pregnant. Pregnancy is most precisely tracked in weeks (40 weeks total from your last period), since "months" don’t divide evenly into weeks.
In the third trimester, monitor your baby’s movements with daily kick counts, attend more frequent prenatal visits, pack your hospital bag by about 36 weeks, install the car seat, and learn the signs of labor. Report decreased movement, bleeding, or signs of preeclampsia to your provider promptly.
You’re at or past 40 weeks. Your provider will monitor you closely and discuss options if labor doesn’t begin on its own. Most providers don’t let a pregnancy continue much past 42 weeks.
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Week 42
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