Here are my 12 week shots - first baby.
I know my uterus is still lower than the belly I'm getting, but I haven't gained any weight and I'm not feeling bloated, so I feel like my little bit of belly must at least be the baby rearranging things? DH noticed it as well (the one time I'll let him get away with commenting on me looking bigger, lol!) and said that it's definitely different than it was pre-pregnancy.
I have shots on a CD somewhere of the day I found out I was pregnant (3w4d) and a few from weekly "anniversaries" since then. When I track them down I'll post those, too, for comparison. 12 Weeks #112 Weeks #2
Excuse the maternity pants, I probably don't "need" them yet but I was down to one pair of jeans pre-pregnancy, and didn't want to buy a bunch of new clothes that may or may not fit me a year from now.