I recently got into a relationship. We have been sexually active few times over the last month. My boyfriend was a virgin. I have had a few partners but it’s been almost two years. My boyfriend recently had the urge to pee plus a little burning and it’s been like this for a week. He went to the doctor got tested for UTI and it came back negative. This morning he said he had puss come out of his penis. I’m worried he might have and STD. I’ve never been tested because it’s been almost two years since I was socially active. Could I have an STD and not know it?