Is this considered rape ?

This bothers me even though it happened long ago. I was dating this guy for 3 years at the time and we were honestly so in love. one weekend we decided to go on a trip and stay in a motel. My ex loved to drink. He always needed alcohol to have a good time...I was never like that but of course being so in love with him I drank too. We drank all the time and this weekend we decided to sit around a campfire at his cottage near the motel and chug back straight rum. Me being just 18 I didn’t know any better and I ended up drinking way too much. I couldn’t even walk. I remember we talked about having sex before we got to the campfire that night. It was super late when we left and when we got back to the motel I felt like I was going to pass out. I laid down drunk out my mind and I remember saying “bath” because I was so drunk and felt sick. I wanted a bath to relax. My ex started to run the bath as he started drinking more. He was not drunk though. He was fully functioning. He came and he slid down my pants to get me ready for the bath ( so I thought ). But then he said “baby what if we have sex” . He knew I didn’t feel good and was hammered and wanted to have sex. Me being too drunk to know I agreed . Technically I consented but deep down I did not want sex and I remember how horrible the experience was. I felt so used the whole time and he was on top I couldn’t even move that’s how drunk I was. I do t even remember how long it went on but I know I was too drunk to form words and the next day I woke up shocked my boyfriend would use me like that. But to this day I never understand..would be considered a form of sexual assault ?