I engaged in protected receptive anal sex with another guy that says he negative. He was very endowed so we actually didn’t fully have sex maybe 2 or 3 minutes. I heard a popping sound from behind, withdrew immediately and noticed the condom had broke. He was barely inside me for no longer then 5 seconds. He state that he is hiv negative. But I freaked out and got PEP started within 18 hours of the incident. Please evaluate my risk and is PEP effective, so far I’m not having any side effects from the medicine. I was prescribed Truvada 200/300 MG q day, with isentress 400mg BID.