Is there something wrong with me?

Me and my boyfriend have sex all the time, but everytime we do I find little to no pleasure in it? His dick isn't big , but it isn't small either. Is it just me? Or what do you guys think is the reason for this? Am I just not attracted to him sexually? Because I truly love him, but idk if I like the sex enough? I mean he cums 5 minutes into us having sex, and we usually last about 15 minutes because he orgasms and I want to orgasm too but once he gets his pleasure I don't get none afterwards, like I usually want to continue, but he doesn't 😭 please help me , I am 17, and he is 18 ;-;