BSOHF

I was having stomach issues. So, I went to the doctor. She gave me prevacid to take for 30 days thinking it was heartburn or acid reflux. Have 4 more days on the medicine. Got an ultrasound for kidney/gallstones - came back negative. Also found out I have a ovarian cyst on my right ovary. When I ate it made the problem worse - the prevacid helped that. I feel much better than I did before I took the prevacid. Now, I seem to have abdominal pain & cramps after I eat and my stool seems to have undigested food in it - like salad, tomato skins, red onion, seeds from bread, & apple skins. Feel full even after I eat a normal size meal. Would this be a side effect from the prevacid or would I have IBS? I always had a stomach that was effected by stress. Before job interviews I would have bowel movements, before my menstrual cycle, and if i had a migraine. I never had abdominal pain & cramps like this and i never had a problem with the food i ate.