I think my boyfriend laced me

A couple of days ago me (18F) and my boyfriend (26M) got into a heated argument in relation to him wearing condoms, after he apologized I thought everything was okay and we were normal. Last night he asked if I wanted to smoke with him and as always I said yes, my first hit I already felt something was off. It was almost like I was seeing shapes when I exhaled, he asked if I was okay but I tried to play it off as if nothing was wrong. I took another hit and my vision got worse. I don’t even remember what fully happened after we smoked but this morning I woke up and my boyfriend was gone, I didn’t have clothes on and I was kind of sore downstairs. I threw up immediately after waking up with a raging headache. I have bruises on my neck and near my inner thigh that I know weren’t there before. I texted him back to back but no answer, when he got home I asked what the fuck we smoked yesterday and he said I was “tripping” because he was completely fine. I asked if we had sex and he said no but I’m not completely sure. I want to break up with him but I’m not sure how.

Update: hey guys I have reached out to an old friend and am now safe. First thing I did was get plan b. Thank you for your help guys:)