After a couple of days of protected sex with a girl (oral was unprotected) i had a red or brownish spot on head od penis they were harmless and non itchy i assumed it was a
std so i checked with a doctor he said it was no sign of std and gave me a kind of oil cream to rub the spots, now they are gone but my friend who lives with me had the same spot on head of penis, is this caused by a rash or is this a std?