What’s wrong with me?

Hi everyone. I’m 18 years old and I have been with my boyfriend since sophomore year of high school. I love him so much and he’s amazing to me. There’s only one (slight) problem, our sex life. We’ve been having sex for about a year now and i have never orgasmed before. Even before we were having vaginal sex, I was never able to come to a climax either. He is my first boyfriend and the only person I have been with sexually. I enjoy having sex with him, but I don’t know why I can’t orgasm. Is there something wrong with me?