Hi Bailee,
I have the same symptoms, and I found out from my specialist that it's gastroparesis. Your food is not moving through your intestines, so you have nothing to put out. I would feel full,bloated, and unable to eat. If the food that's in your intestines stays to long, your body will get rid of it, and you get diarrhea. Try eating small meals, no raw vegetables, no raw fruit. I used miralax daily. Consult a gastroenterologist.