Is It Safe To Take Citro Soda & Tablet With Flavoxate Hydrochloride For Errections?

Hello Sir, I am Vejay and my age is 26. I am sexulally sensitive towards girls and get errection most of the time talking or seeing them, its out of my control. A few days ago I started passing urine with a sensational desire to pass more with a little burn in penis and a little pain / disorder in lower abdomen. My Dr. dignosed it some infection (UTI pehaps) due to too much errection for longer duration. Gave me Citro-soda and tablet containig (flavoxate hydrocloride B.P 200mg). 1 - Is this cure Ok ? 2 - Does to much errection cause urine disorder and iritation ? 3 - I am feeling quite well now after only two dosage but feel irritation while having errection, will it be ok ? 4 - In normal days, I somtimes feel pain in testicals and lower abdomen after longer errection, is it natural ? I rarely mastrubate though and get orgasm while sleeping ocassionally. Thank you,