False memory ocd

So i was with my friends at some beach party.However,i drank a little too much.A guy who i know was there too and texted me and i went over his table and started talking.Long story short we started kissing but he turned out to be such a snob so i said that i am not sleeping with him and i went to my friends and we got home together.But i was drunk.I remember what we’ve talked about, of course not every single detail but the important parts.I have ocd,i am diagnosed but it is very hard for me.However,the next morning i created a scenario in my head that i had sex and not remember it.My friends said that i would have remembered if a had sex even if i was drunk but my ocd is saying otherwise.And i am trying to explain to myself that if I remember what i’ve talk about with that boy and would certainly remember if i had sex because this is something big for me(i am very shy and anxious about having sex and this is part of my ocd as well).So please tell me if i sound absurd and how to calm myself.Btw i just want to say that this is not the first time for me to have these thoughts.I feel guilt and i am scared so please don’t judge.Do you think i could have had sex and not remember it?