Suggest Treatment For Pain On The Penis And Premature Ejaculation

Hello, I had this sore on my penis 3months ago and I just thought it was a reaction, took some anti biotics and it didn t clear I have done several sti tests all negative, now the sore has left my penis, but there s an itchy reddish and sometimes burning sensation in. My scrotum, and I sometimes have involuntary discharge, the skin in my private area has turned very. Fragile and there s premature ejaculation( not that I have had sex to confirm all these, but sleeping, pooing and sometimes masturbation has been how I notice these)