I started showing at 10 weeks with my first and about 12 weeks with my second and this one I noticed my jeans were tight at about 7 to 8 weeks, now at 12 weeks I have popped out noticably. I have a short waiste and I'm only 5ft (i sound a bit freaky )so when I eat I get full very quickly and that's when I really stick out, there's just no room for my stomach to go but out.