Welcome to Healing Well. Did you have surgery due to Crohn's or UC? I had a proctocolectomy two years ago after battling Crohn's for 7 years. When I was sick, I was very skinny, and now that I'm not sick anymore, I've gained weight. That's probably what's happened with you, too.
The best way to lose weight is to do some sort of exercise 5 days a week for at least 30 minutes, and of course, cut down on calories. Once you get into a routine of exercising, the pounds will come off.
Dx'd Crohn's in '99 at 28. Proctocolectomy and ileostomy in '06.
Disease-free, medicine-free, and very thankful to be healthy again :)