Suggest Treatment For Sore And Papules On Urethral Orifice

hello doctor,

I m presenting with a very small sore on the external urethral orifice of my penis and its having no problem till now. i m having no burning during urination, but i have tell u my past sexual history.Before six months i had a sex with an girl who has relationship with others also, but not a professional prostitute, after three days i got a very dull pain in the right scrotum( not so painful), then i consulted a urologist, he gave me azithromycin 1000mg and oflaxin 100mg twice a day for 10 days, but after that also the feel of pain dint stop.again another physician gave me doxycycline 100mg for one week. at that time i saw small sore like (around 1mm) size on the external urethral opening. but no pain or burning. but still now i saw the same spot over here. i feel that that can be a scar. i have taken blood test for bacteria and it is negative, and ultrasound scan hows that my scrotum is normal. before few weeks i developed like small pappules on the glans penis and it goes away and itching also. if i apply a clotrimazole cream it goes away on next day. so what may the problem of mine. and im worried alot of my personal problem