I just need someone to explain.

I’m 20 and I’ve only slept with 2 guys my whole life. I need some help understanding because seriously the internet is not that much of help. The first guy I’ve been and lost my V card with had plenty of sex. The first few times I really didn’t have an orgasm but I let it go and said maybe I’m not used to it. And it kept happening and I didn’t know why. I learned that it’s pretty common. Now that I have a new boyfriend because I haven’t dated anybody for 2 years, it’s still happening, I can’t have an orgasm AT ALL. I feel something, it feels good when it’s inside me but I can’t have an orgasm. And my boyfriend is pretty experienced.