How much weight you should gain depends on your body mass index (BMI) before pregnancy. BMI is a measure of your weight in relation to your height.
| Pre-pregnancy weight | BMI (Kg/m2) | Total weight gain range (kg) |
| Normal weight | 18.5 to 24.9 | 11.5 to 16 |
| Underweight | Less than 18.5 | 12.5 to 18 |
| Overweight | 25 to 29.9 | 7 to 11.5 |
| Obese ( include all classes namely grade I, II & III) | Equal / more than 30 | 5 to 9 |
- Normally, a woman should gain 9-11 kg during her pregnancy.
- After the first trimester, a pregnant woman gains around 2 kg every month or 0.5 kg per week.
Ref – Guidline MOs Cover.pmd (nrhmorissa.gov.in) http://nhm.gov.in/images/pdf/programmes/maternal-health/guidelines/National_Guidelines_for_Diagnosis_&_Management_of_Gestational_Diabetes_Mellitus.pdf