It is not painful at all, there's no smell, and to my knowledge the substance only appears after urination. Basically, my only symptom
or sign of something, is the white
substance. I'm 18, and have had 2 sexual partners. The first was my girlfriend of two years, who I'm pretty sure doesn't have any sort of STD. I never noticed this substance during the year-long period that we were having sex and we have broken up for 8 months and haven't had sex since.