Ive had a single flat painless, flesh color ring with a slight white border, about a half dime size located on glan of penis . No bleeding , no itching, no puss , no change in texture or size. Noticed it two weeks ago and its soft to the touch. I m 24 and had unprotected oral sex 2 months ago. It doesn t look like any std picture I ve seen on the internet. What could it be?