Abdominal Pain, Feeling Of Full Bladder, Frequent Urination. Diet Contains Aspartame. Normal Blood Sugar Test.

Question: I am a 41 male that does not drink or smoke. I have no history of prostate/bladder/urinary track problems. Last week after a workout session in which I preformed side crunches I noted that there was a dull pain in my sides. That evening I noted that my trips to the bathroom had increased and the feeling that my bladder was full continued. This continued for several days and my ability to sleep decreased. Finally I went to the emergency room to be checked out. The Doctor checked my urine for an infection and said it was clean. He also ran a blood suger test which came back normal. The Doctor subscribed a small dosage of Oxybutynin and advised I see a Urologist (I am in the process of doing so). The drug has helped but I am still have difficulty sleeping and the pain in the sides persists. It should be noted that I am under allot of stress from work and I recently changed my diet 6-7 weeks ago to drink less pop but started drinking diet pops which I understand contains aspartame which the doctor explains could have contributed to the condition. Lastly my urines color has either been yellow or clear (no blood) and there has been no leakage.