Hi, I Had DIEP Flap 16 Months Ago. I Still

Hi, I had DIEP flap 16 months ago. I still have belly swelling but now it is more painful,especially in my lower abdomen where it feels like a tight girdle and pressure that gets worse as the day goes on. I am petite at 5ft and 115lbs. My stomach used to at least be flat and have that tummy tuck look initially. Now over the last 6 months it is rounded, never flat and the more that I try to increase my activity. The worse the pain, pressure and low belly swelling gets. My medical doc says he can't feel a hernia.
Thank you, Laura