help....

I was in a relationship from 2013-2015. it was my first relationship and my first everything. I was 19 and didn't really now how sex and relationships worked. When I lost my virginity to this person it was sweet and he checked if I was okay and everything was good. But further into the relationship sex became something I didn't like, he was rough and he hurt me. Sometimes I would even bleed because it was so bad. There were many occasions where he would inititiate sex and I would say no, but he would keep trying to persuade me and eventually I would just close my eyes and let him carry on because it would be easier if I just let him get off. Or he would make me feel guilty for not wanting to or he would shout at me. Was I asssulted. I said no, but I didn't fight. Did I let it happen?