By not saying no am I saying yes?

I was 17 at the time and I was at my boyfriend at the time house. I was falling asleep on their couch and he suggested that we go into his room and cuddle. I didn't really have a problem with that because we cuddled all the time in his room. We kissed for a bit but really I just wanted to sleep. I did start to doze off and suddenly he is on top of me saying "things would be more comfortable without pants on". I don't remember much of what happened next except that before I had time to say anything he was in me. I didn't tell him to stop even though I really wanted him to and I regret saying nothing. After he finished he patted me on the back and told me to watch my period because "I forgot to use a condom"

I just don't really know. By not saying no am I saying yes? I really have absolutely have no idea what to do and really any advice would be amazing.