Too big for my week?

First “real pregnancy” I had a previous miscarriage & for some reason I feel like I am super big for only being 4 months. To a point where I catch myself sucking in 24/7 because I don’t wanna seem “too big” for my month.

I know there’s no “right” size to be at, but I just feel too big.

Is anyone actually showing at 4 months?