rape or not?

Hi there I was at my boyfriends house today and he was very horny and kept on pushing his hands down my pants. I kept shoving them out and saying no but he kept doing it so eventually I just gave in and gave him access. Then he pulled down his pants and entered me which I told him no and tried to push him away. I really didn't want to have sex with him and didn't enjoy it at all. Is that classed as a form of rape?