Hi, I recently went to the doctor for lower pain in my stomach on the left side down by my pelvic, and mid lower stomach. If I push on it, it hurts my colon...he tested my pee, and said it was a little dirty so put me on an antibiotic. Well now my entire stomach is killing me. It feels like it's full of air, and it's really tight. It hurts to use the restroom, and I've used laxitive twice already. Please help!