Cum inside me

I'm honestly upset at the fact that I took Benadryl last night and my boyfriend knows it knocks me out and I sleep very hard. Well he took advantage of me and did anal which I do not like and have never done before!!! And he has done this before when I took benadry he takes advantage of me when I'm half asleep  I honestly don't know what to do. And I think he can a little in my vagina as he was pulling out but at the very end when he was pulling out so could I get pregnant from that? He wants to lie to me and tell me I was enjoying it and moaning when I don't remember ANY of that.