I would say your Pdoc isn't very nice if he blew off your weight gain concerns with some smarmy comment about diet and exercise. You do more than the vast majority of people in this area. The effect has been so dramatic that your mother made you take a pregnancy test and you can't wear your clothes.

I vote for tying your Pdoc to a chair, making him take Zyprexa, then put all his favorite foods in front of him. When he reaches for the food say NO then whack his hand with a ruler. (Just kidding)