Is this sexual assault?

So i me this guy in a class and we hit it off. We had a break in between classes and decided to hang out. The third time we hung out, we sat in my car and just talked for hours and ended up making out. He told me to move to the back and I said I didn’t wanna do anything beyond kissing. He said okay and before I was even in the back, his d!ck was out. He said to suck it and I said I didn’t want to. He tried to convince me and I said no again and he started pushing me. I was alone with him (my fault) so I just did. He was pushing my head down and I said no twice before but ig I “gave in” when he started pushing my head down. I hated it. And I think I gave in out of fear tbh cuz we were alone. But I always blame myself because I didn’t fight harder. Is it sexual assault or am I reaching?