On average, women consume 300-500 kcal extra daily throughout their pregnancy (remember this will vary per person). If your BMI is less than 18.5, you should allow yourself to gain between 28-40 pounds. If your BMI is within the normal range (18.5-24.9), you can gain between 25-35 pounds. If you are overweight and your BMI is between 25-29.9, you can gain between 15-25 pounds. If you are obese (BMI > 30), you should gain between 11-20 pounds. Remember, these are recommended numbers by most obstetricians. The human body is very resilient and will prioritize most of the consumed vitamins and nutrients for your baby first, no matter what the circumstance.