Why can't i feel ?

(This question is for the mature) Okay i have been ually active since i was 18 and i am now 20. I've been with my boyfriend for 2 yrs. But for the past two months when making love, i can't feel anything. Like i can't feel him in me. I thought it was because i was overed. so we took a break for a couple weeks. And now we decided to try and see if i can feel him again. But i still felt nothing. Like i get and everything, but when it comes to actual , i feel nothing. So i get upset that i can't feel anything, and so i am unable to please my bf. I use as a stress reliever, but this is stressing me out. And it really sucks, because if i can't feel anything i can't have s nor can i *** and it sucks. It also stresses my bf out because he wants to please me and he can't do that if i can't feel him. And yes we've tried many positions and nothing is working. So i guess the question is whats wrong with me? i'm scared.