Last week I briefly (less than 30 seconds) gave oral sex to a man I know. I have very good oral health (gums don't bleed when brushing or flossing etc), he was tested in April and was ok. We are both in good health. He didn't ejaculate in my mouth and there was only the tiniest droplet of pre cum visible on his penis before I took it in my mouth. He performed oral on me quite a bit but I know there is no risk from that. I've read so much on here that tells me I'm not at risk but I guess anxiety has kicked in. Should I be worried¿