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This guide is for educational purposes only. Always consult your healthcare provider about your pregnancy weight gain.
Pregnancy Progress
Week 3 of 40 (8%)
0.3-1.1
lbs gained to date
15-25 lbs
total target
Minimal
lbs/week rate
No change
cal/day extra
Track your pregnancy nutrition with FitCommit. Camera food scanning makes logging effortless.
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The neural tube (brain and spinal cord) begins developing. The heart starts to form.
A home pregnancy test may now show positive. Morning sickness may begin.
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.
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 3), key nutrients include iron (27 mg/day), calcium (1,000 mg/day), and vitamin D (600 IU/day). A prenatal vitamin covers most needs.
If you are gaining more than the recommended 15-25 lbs for Overweight BMI, talk to your provider. Focus on nutrient-dense foods, regular gentle activity, and avoid restricting calories without medical guidance.
If your gain is below the 15-25 lb range for Overweight BMI by week 3, discuss it with your provider. Inadequate gain can affect fetal growth. Small, frequent, calorie-dense meals may help.
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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