Hi, I Am Having A Lot Of Problems With My

hi, I am having a lot of problems with my stomach, every time I eat, my stomach extends and sticks out, sometimes it can be very painful. I almost look 3 months pregnant, I am thin, so it is very noticeable. I eat healthy most of the time, and try watch what I eat. But at this point and time, I am not sure what to eat.

thank you