Sudden distended abdomen

I had a bloated stomach for a couple days that then turned into a very distended stomach overnight, I look 6 months pregnant and feel pregnant, out of breath etc... I initially had a fever for 5-6 nights, very fatigued, feel achy etc...no diarrhea, no vomiting, no nausea, definitely not pregnant. I have had many blood tests, no issues labs look good, initially had high white blood cell count was high when I had the fever but now its back to normal, had upper/lower GI, no blockage, x-rays look fine, cat scan showed swollen intestines have been to 4 doctors and will be seeing my fifth Monday. Each and every doctor has said they've never seen what I look like and all ask if I have recently been out of the country ( I haven't)  Have not had a colonoscopy yet. My stomach has been distended for 17 days, initially also had severe cramping pain. Doctor prescribed pain pills for that. Antibiotics did nothing. I do not have a parasite. Do not have Celiac disease and Crohns they say is a possibility, however I don't feel like a lot of the symptons for Crohns apply to me. Does anyone have any suggestions, ideas? Thanks!