it's difficult to say what is causing your weight change because i don't know your height or pre-pregnancy weight. women do burn about 500 more calories while breastfeeding so it could be the reason you weight is down. you say you are constantly eating but if that means grazing all day you might be getting less nutrition than you think. i recommend you eat 3 regular meals with 4-5 food groups and 2-3 snacks with 2-3 food groups (dairy fruits vegetables lean proteins whole grains and healthy fats). for example breakfast could be oatmeal with fruit nuts milk and a boiled egg. a snack could be an apple dipped in peanut butter with some yogurt. this article will help you meet your unique nutrition needs during this time. if you remain concerned with your weight see your healthcare provider.
why can't i gain any weight? . i am nursing an 11 month old but i'm not totally sure if thats the only reason i can't keep my weight over 100 pounds. before i got pregnant i was never this thin and i'm constantly eating.