Answer:
It depends on the weight of teen before getting pregnant.
25 to 35 pounds should be weight gain for average weight girl , for underweight girl it should be 28 to 40 pounds and 15 to 25 pounds for overweight girl.
Explanation:
Nutrition , exercise is must for healthy teen pregnancy. All essential vitamins , minerals iron , calcium , folic acid should be in the diet. Low intake of essential diet leads risk of low weight of baby , also may be other health complications. Alcohol, smoking , drugs should avoid during pregnancy.