Hi there future mum,
I was a slim girl with my first as well but it didnt stop me putting on weight with him. I put on 4 half stone. Actually think it might go that way again. A friend of mine who in her words feels she is a larger lady, dress size 16, which I think is great, she only put on a stone and a few pounds. So Im quite confused as to how and why some of us do and some of dont.