Sixteen weeks and popping

I am sixteen weeks pregnant now (which I think is about 4 1/2 months) and my stomach popped out this week! Holy Hannah did it ever.. all of a sudden I look more pregnant! My stomach has felt like its stretching all week... not pain but just stretching... oh bring on the stretch marks!!
Oh but I did feel the little pudge move this week.. that was cool!! Move baby move...