Question????

Jennifer • My little girl will be five in July and is a huge big helper to her little brother that was born in March.
I am currently 15+2 weeks with my second pregnancy. With my first I was a full time worker and part time student so a little active but not much and I only gained 7 pounds and pregnant with a girl. This time around I have already gained 12 pounds and I'm a stay at home mom and full time student. My husband even made a comment that I'm getting bigger this time around but that it looks like it's all in the belly. Could it be that this time around the baby could weigh more or I need to look into what I'm eating?
(I feel I'm eating the same, healthy wise, as the first pregnancy, but more intake, and my daughter weighed 6lbs 3oz)