| How Many Pounds Should I Gain In Pregnancy?
If you are expecting one baby:
If you were a healthy weight for your height BEFORE pregnancy (115 to 154 pounds), you should gain 25 to 35 pounds during pregnancy. You gain between 1 and 4.5 pounds in the first trimester and about a pound a week thereafter.
If you are underweight for your height BEFORE pregnancy you want to gain between 28 and 40 pounds. You gain 1 and 4.5 pounds in the first trimester and a little over a pound a week thereafter.
If you are overweight BEFORE pregnancy, you should gain less weight during pregnancy. That is, about 15 to 25 pounds. You gain 1 to 4.5 pounds in the first trimester, and then a little over half a pound a week thereafter.
If you were obese BEFORE pregnancy, you should gain no more than 20 pounds in total during pregnancy. You gain 1 to 4.5 pounds in the first trimester and less than half a pound a week thereafter.
If you are pregnant with twins:
If you were a healthy weight BEFORE pregnancy, you gain between 37 to 54 pounds.
If you were overweight weight BEFORE pregnancy, you gain about 31 to 50 pounds.
If you were obese BEFORE pregnancy, you gain about 25 to 42 pounds.
Obesity Calculator: Check your pre-pregnancy weight to determine which category you are.
Pregnant with Twins: Advice on what to expect.
Where Does The Weight Gain Come From?
Baby: 7.5 pounds
Extra blood in circulation: 3 pounds
Increase in breast size: 2 pounds
Placenta (which is expelled after birth): 1.5 pounds
Amniotic fluid (liquid the baby floats in): 2 pounds
Water retention: 4 pounds
Extra body fat and protein: 7 pounds
Why Is It Important To Gain The Right Amount of Weight?
If you gain too little, you risk having a baby of low birth weight.
If you gain too much you could have a large baby, premature birth or increase your chance of developing gestational diabetes and hypertension.
Will pregnancy raise my blood pressure?: Understanding hypertension.
High blood pressure in pregnancy: What risks it poses to mom and baby.
How much weight gain is normal in pregnancy? How much women actually gain.
Need more information on caring for you and baby? See: Prenatal Care Guide
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