Can't get wet

I've realized over the past year that I've not been able to get wet. I've never really been a soaking person, but now I'm super dry. Like I have to use copious amounts of lube to have sex and then that dries up quickly, even masterbation doesn't really get me wet. And it feels as though sexual touch doesnt register with me anymore, I used to get super turned on without any trouble, but nowadays my boyfriend can be playing with my favorite spots and I'm just kind of like mehh but I know he needs affection so I give it to him but not without facing my dryness problems. In the past year i was put on ambien and imitrex ( a migraine medication) and trisprintec ( BC) now my sex drive is dead. I'm only 18 ?