Low Drive

Vona
So lately I've been completely put off by everything and anything sex related. No desire for sex, not getting turned on by the usual things, and during sex I don't feel anything (I don't even get off). I know its not my boyfriend because I am still sexually attracted to him and everything, I love him to death. Its really upsetting because I have no clue why its happening. I mean I use to be excessively horny 24/7.... Anyone going through this or has? Help please! I'm 19 btw