is this considered rape or assault?

I genuinely do not know the answer to this question and i have been asking myself this for a long time.

Ok so back in December 2018 i had a boyfriend who would not stop talking about sex. I knew i wasn’t ready, we had just started dating and i was 13. Every time we would call or text, he would want pictures of me (which was something i never did and never thought of doing before). He would always pressure me by saying “dont you love me” and me being dumb i would send him the pictures. After a while he started planning us having sex and he kept asking and i said no every time. This went on for a month. And every day he would ask and i would say no. It got to the point where he yelled and me and threatened to break up with me. I was scared he would expose the pictures so i said fine just this once. We did it and i very much did not like it and didn’t want to do it. I was 13, it was my first time so i thought i should have been excited about it, but looking back i feel disgusted in myself. We dated for another 6 months after that and every time we hung out it was because he wanted to have sex. Was a assaulted or do i just regret it? I don’t want to accuse someone of doing something they didn’t so but i have been beating myself up for two years and i feel so uncomfortable when boys touch me. plz help me