Post op weight gain?

I'm about 3 years post op and last year I got to 1 pound away from goal. Then I started on some heavy dosages of fertility meds and now I am left with a 65 pound weight gain. Needless, to say I am distraught. I'm working out everyday and drinking 2 liters of water, I don't eat bread or sugars and I am on a vegetable and lean protein diet. My question is: has anyone out there experienced post op weight gain? If so how did you handle it? P.S. I feel like I am at the end of my rope and I cried my eyes out yesterday to my hubby who is in the middle east because I now feel like food is my enemy even although I eat healthy. I appreciate any help or advice.