Orgasm?

Okay, so i’m 16 and i’m not sure if i’ve ever had an orgasm. I’ve been in a relationship for about two years now but i’ve always put it to the side about my pleasures. My boyfriend wants to see me cum but i’m not sure. I read comments about how you’re suppose to have an orgasm if you stimulate the ( i think it’s a g-spot? the ridges inside your vagina) but i honestly don’t like how it feels. I feel like im about to pee and I don’t like it at all. Does anyone have any suggestions?