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This guide is for educational purposes only. Always consult your healthcare provider about your pregnancy weight gain.
Pregnancy Progress
Week 18 of 40 (45%)
5.8-10.5
lbs gained to date
25-35 lbs
total target
0.8-1
lbs/week rate
+340
cal/day extra
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The fetus is the size of a sweet potato. You may feel movement (quickening). Ears are in final position.
Your uterus is now about the size of a cantaloupe.
Blood volume increases 40-50% during pregnancy. Iron prevents fatigue and anemia.
Fetal skeleton is developing rapidly. Maintain your own bone density.
Critical for fetal brain and eye development. Found in fatty fish or supplements.
Supports calcium absorption and immune function for both mother and baby.
+340 calories per day
During the second trimester, you need about 340 extra calories per day. That is roughly a yogurt with granola and fruit.
The fetus is the size of a sweet potato. You may feel movement (quickening). Ears are in final position.
Discuss weight with your provider at every prenatal visit. Seek immediate guidance if you gain more than 3 lbs in one week (may indicate preeclampsia) or if you are losing weight after the first trimester.
At week 18 with Normal Weight BMI (BMI 18.5-24.9), the IOM recommends a total gain of 5.8-10.5 lbs so far. Your overall pregnancy target is 25-35 lbs.
For Normal Weight BMI at week 18, a healthy gain is 5.8-10.5 lbs total. If you are outside this range, talk to your healthcare provider. Individual variation is normal.
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