Can't orgasm

25 years old and recently lost my virginity last year to my BF of 4 year.

Oral sex is mind blowing all the time with him. I ALWAYS CUM whenever we have oral sex. For some reason having sexual intercourse, I can't feel good. I just feel his hard penis but can't feel anything but his penis.

I expressed everything to him, he feels that practice will get us there. He is very supportive but I just feel like a lousy lover.

I strongly feel something is wrong because I can't feel good but my GYN says everything is healthy.

It is absolutely frustrating, I want to feel good just like how I feel with oral sex.

Any ideas?