Too intense for me?

I'm a woman in my early 20s but I just started having sex recently with my boyfriend. He is my first and only sex partner. My concern is that I don't know how common is what I feel. When we are doing it I have multiple orgasms (from 2 to 4 each time he finishes). I moan and scream all the time, my sight becomes blurry and I can't move at all. At first he was really soft with me, but now he likes doing it hard. I love him and having sex with him to be clear.

He says I'm very sensitive and there is a significant high difference. I'm quite short in comparison, we have dificulties often with the penetration, it is always dificult for him to get in (sometimes he can't fully penetrate me). He likes to do it many times in a row, and each round I end up extremely tired. It takes me a few days to recover from being fatigued and muscular pain.

I have known from female friends who only reach an orgasm once. And as far as I know that's the norm, isn't it? Is there something wrong with me? My partner loves how I am and I'm really happy too. Is there enyone here who feels this way?

Feel free to ask whatever you want :) I just want to know how common is this.