Low sex drive?

Hey girls, so I'm 17 and I don't enjoy sex at all like everyone else? Like is it cause I have a low sex drive or is it something else? My boyfriend always wants to have sex but I just never want to and i dont get in the mood often and if i do it will last like a few minutes and I'll want to stop??? I want to be able to enjoy sex but i just cant... I don't know what to do :(