I had a resection in Oct. Truly you have to find foods that are not going to irritate your bowels. I eat what ever I want and have. There are only a few foods that I can't tolerate- pork is at the top of the list. Is there a dietician where you are receiving treatment? I have found that the more veggies I eat the better I feel. Doesn't make sense, but its been working. Wash the melons well before you cut into them. Bananas should be good for calming stomach. The only food i avoid is raw oysters.
Sounds like they have you on a low fiber diet...higher fiber will help bind things up.
My surgeon and gastro were conflicting- young surgeon wanted to to keep me on a weird diet. Gastro older guy, said eat what you can.