Emergency help! M a lot worried. Else?

As my doctor prescribed i was taking flavoxate for 5 days so that my frequent urination stop(which lasted since more than a month and always gets suppressed with medicine). Now its been a week since my medication was over and my frequent urination(with more volume) stopped. But now since 2-3 days i was having gas problems(nausea and feeling of fullness after eating), abdominal cramps( very mild) and when i press the area down to left to my navel i felt ache.. while my FU had gone away fr a while i had a feeling of urine in urethra bt that was controllable.. also, when i press the area near my left hip bone i feel pain(more like a crampy ache) and also i have discomfort in my left leg.. i feel a slight heavy on my left leg and also my freq urintn returned(i get to urinate evry 2 hr now) As per prvs tests prescrbd by docs i have done Ultra snd whole abdomen(all normal bt i hv ectopic kidney), cbc, diabetes tst, urinalysis(all came -ve). Cn dis b an uti which is nt detected? Or smt else?