Baby Underweight

It's 11/19/2010 and well if you guys didnt know my girlfriend is 6 months pregnant and we will be having a girl in March. Yes I'm excited about it but kinda concerned. This is because on our last sonogram we was told that the baby Erica was in the 37 percentile as far as weight. This meaning that she was under the average weight. So as about right now we are in a state of worrying. This is because we are wondering why she not gaining weight when my girlfriend eats almost everything. Lol..But hopefully things will get better and she will grow.