I CANT FEEL SEX ANYMORE?!

I've only had 2 partners, my first one was small/average only dated for 2 months.. my current one is large maybe a little more then 7 inches and we've been dating for a year I recently for the past month or so can't feel him anymore down there!! Im not over weight, I have no children I can feel him in doggy position and that's it really I wonder if he feels I'm lose.. I try an flex down there when we have sex to see if it changes but I feel so bad.. in the beginning of our relationship he could only fit 1 finger in me and now I feel like I feel lose.. why can't I feel him anymore.. I know the vagina will adapt to your partner size but that'll happen around month 3-4 I feel like I shouldn't feel like this has anyone else had this happened to them please help :(