I see it too!! My belly changes every week and I think if I didn't take weekly belly shots, I wouldn't see a difference in mine either. You look MUCH PREGO!! :) Looks great!!
lol don't worry girl it will start to get more noticable once you start hitting 20 weeks and on, then you will realize your belly changes lots, then it slows down and then all of a sudden it changes again. =)