Hello!Thanks for putting your querry in HCM. I am a Gastroenterologist. Onething before I advise you I want to know why you have stopped taking gluten
.This is advised only in patients who are suffering from celiac disease
and without cofirming ( few diagnostic tests) it, idont think one should avoid it. Ok lets come to your querry. Since you are getting discomfort and swelling also in left upper abdomen with altered bowel habbits, it may be partial intestinal obstruction
. So get a Xray abdomen in standing position and seek opinion of Gastroenterologist who may advise you to undergo colonoscopy
examination.I hope I have answered your query. Remain in touch and get-well soon.