Is this messed up?

So a week ago I was messing around with my now ex. He really wanted to do anal hit I didn’t cause I’m just not ready. He kept trying to do it and I kept saying no. So he held me down and said ‘just let it happen. Don’t you trust me?’ Like he was making me feel like shit about saying no. Anyways I said I did trust him but I didn’t want to do anal and he did it anyways. I screamed stop and he wouldn’t stop till I basically kicked him off me and then he made it seem like my fault for saying no. Would y’all consider this sexual assault or nah? Like I was fine at first but now it’s starting to bother me like thinking about it makes me hyperventilate