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This guide is for educational purposes only. Always consult your healthcare provider about your pregnancy weight gain.
Pregnancy Progress
Week 4 of 40 (10%)
0.3-1.5
lbs gained to date
25-35 lbs
total target
Minimal
lbs/week rate
No change
cal/day extra
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The embryo is about the size of a poppy seed. Limb buds appear. The heart begins beating.
Your first prenatal appointment is typically scheduled around this time.
Critical for neural tube development. Prevents birth defects of the brain and spine.
Supports increased blood volume and prevents anemia. Needs increase throughout pregnancy.
Supports calcium absorption and bone development. Many women are deficient.
Supports developing bones and teeth. Your body will pull from your bones if intake is low.
No extra calories needed
During the first trimester, your calorie needs do not increase. Focus on nutrient quality over quantity.
At week 4 with Normal Weight BMI (BMI 18.5-24.9), the IOM recommends a total gain of 0.3-1.5 lbs so far. Your overall pregnancy target is 25-35 lbs.
For Normal Weight BMI at week 4, a healthy gain is 0.3-1.5 lbs total. If you are outside this range, talk to your healthcare provider. Individual variation is normal.
During the first trimester, you need about no additional extra calories per day above your pre-pregnancy intake. This supports fetal growth and your increased metabolic needs.
During the first trimester (week 4), key nutrients include iron (27 mg/day), calcium (1,000 mg/day), and vitamin D (600 IU/day). A prenatal vitamin covers most needs.
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