Problem in urination. Which i could do?

Hi sir i was used to masturbate from 6 years thats why erectile dysfinction occurs from last 1 year and my penile base goes narrow and narrow day by day and now my penile goes on downward side and from few months when i masturbate i faced painful erection sometime and sometime i found frequent urination and burining during masturbation and from last 15 days when i lastly masturbate . I am facing continously burning and stoping of urine . Some time pain in my prostate and also some pain in nerves of penile . Now one doctor give me flotral and antibiotic . Which give me some relief but its not normal till now . I had test of ultasound and x ray in which prostate show normal size . Kfc is normal .urine is normal . Now doctor advised me cyrptoscopy test . But i had fear that is very painful test . Because i have a very narrow passing of urethra . I am very scared of it . Please advised what i do should i continue flotral or go for another doctor .sir is there another test which i could do