He said he takes prep but still makes me nervous

I gave him a blow job and made him wear a condom so protected oral. He got behind me and this made me nervous as he pushed really hard I don’t think he entered as I would have felt it and the condom was still on. What made me nervous was could I have damaged the condom while giving him oral and he rubbed my anus with a damaged condom. When I took the condom off him it looked fine just paranoid. Anyways thank you for your time. I finished by giving him a hand job 

You describe a virtually zero res sexual encounter. The context (and mention of PrEP) suggests you are mostly concerned about HIV, but there also was no measurable risk of any other STI.

In general people don/t often lie about their HIV and STI status or prevention; I see no reason to doubt your partner is on PrEP, in which case it is pretty much impossible he could transmit HIV to you. And even if he had active untreated HIV, the risk to the oral partner in fellatio is estimated at one chance in 10,000 (equivalent to giving BJs to infected men once daily for 27 years before infection might be expected). Second, the notion that you "damaged" a condom by performing oral sex doesn't really seem plausible. Third, it sounds like anal penetration didn't happen anyway. And neither HIV nor other STIs ever are transmitted by hand-genital contact.

So my advice is to not be at all worried. You do not need testing for HIV or any other STI; and if you have another regular partner, there is no need to alter your usual sexual practices with that person.

I hope these comments are helpful. Let me now if anything isn't clear.

HHH, MD