So confused. Is it rape?

Claire • 22, in a relationship w a great guy🥰
I'm talking with this guy, we've been talking for a few months. He knew I was trying to wait until marriage cause I'm religious but one day I was over at his place and we were getting intimate, when the time came to finally actually do it, I said no we shouldn't. So he stopped, few minutes later tried again. I said no multiple times and tried pushing him off, he stopped and a few minutes later guess what? Tried again. I told him no, we shouldn't, and stop multiple times and he still kept trying. Eventually it happened, what was I supposed to do? I'm not strong enough to push a guy twice my size off of me. I never consented. Technically it's rape? I don't even want to call it that because I put myself in that situation. It's my fault. And I don't want to accuse him of that because I like him, we've been involved for months. I don't know what to do I'm so confused. Should I tell my mom?? I'm 18.