Hello, I'm 23, and sexually active, but always use a condom. About 8 months ago I noticed a small very tiny single red dot on my penis head, and it stays for like a day then goes away and comes back like a month or 2 later, then goes away and comes back again. It doesn't hurt, not painful, its so small i can't really tell what it is. It's just one small red dot that comes and goes. Any help would be appreciated! Thanks!