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This guide is for educational purposes only. Always consult your healthcare provider about your pregnancy weight gain.
Pregnancy Progress
Week 31 of 40 (78%)
20-29.2
lbs gained to date
28-40 lbs
total target
1-1.3
lbs/week rate
+450
cal/day extra
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The fetus is the size of a coconut. Fingernails reach fingertips. The fetus practices breathing movements.
Breast milk (colostrum) may leak. Nesting instinct may kick in.
Prevents anemia before delivery. Supports oxygen delivery to the growing baby.
The fetal brain triples in size during the third trimester. DHA is essential.
Fetal bone hardening requires significant calcium. Continue supplementing.
Supports blood clotting for delivery. Found in leafy greens.
+450 calories per day
During the third trimester, you need about 450 extra calories per day. The baby is gaining weight rapidly.
At week 31 with Underweight BMI (BMI < 18.5), the IOM recommends a total gain of 20-29.2 lbs so far. Your overall pregnancy target is 28-40 lbs.
For Underweight BMI at week 31, a healthy gain is 20-29.2 lbs total. If you are outside this range, talk to your healthcare provider. Individual variation is normal.
During the third trimester, you need about +450 extra calories per day above your pre-pregnancy intake. This supports fetal growth and your increased metabolic needs.
During the third trimester (week 31), key nutrients include iron (27 mg/day), calcium (1,000 mg/day), and vitamin D (600 IU/day). A prenatal vitamin covers most needs.
FitCommit scans food with your camera and logs calories and macros instantly. Track your nutrition to support a healthy pregnancy. Free 7-day trial.
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