Confused 🤷‍♂️ I don’t know what to do..!!!

Bello ladies, I been with my boyfriend for almost 2 years and we recently started having sex. But everything we do have sex I don’t really feel anything, unless I am on top of him. They are times when it feel better than other times but I am confused if that’s an orgasm. I have only have sex with him and no one else. He seems to enjoy sex more then I do because he always comes first. I don’t really know what to do in order for me to feel more pleasure when having sex.