It now has been 8 months since my daughter’s Cecal volvulus Surgury.( She is 24 years old) and now she is having trouble gaining weight. She remains at the same weight and needs to gain like 10 lbs. problem is a lot of foods are causing diarrhea since the Surgury. Any advice? Is there any medication she can take ? Also loves chocolate but finds when she eats it doesn’t agree with her. Any food recommendations?