Caro1014-have you ever worked with a trainer? After my first ileo, my husband gave me a gift card for a few training sessions at our local YMCA...and, I have to say, it was a great gift!! I worked with someone one on one (and stayed with her for two years) and she was able to tailor excercises to me and my medical condition. I don't work with her anymore, but I do still do excercises and eat in the manner that is best for my body (portion control, no soda/pop, lots of water, 5 small meals with lots of veggies).
I can lose weight, if needed, when I up my cardio and really watch my calories, but mostly I just keep a constant weight without trying! Any program that works for you is definately the way to go, but remember to really get your heart pumping and challenge yourself to get the best benefit.
I got back to exercising the day after surgery by walking as recommended by my surgeon. Within 2 weeks I was back to hiking and building back up the stamina I had lost with my years of being ill with UC. I think you are ready to get back to getting fit and I think a personal trainer is a good place to start.