I don't know about the medications part but I know that my low sex drive hinges a lot on my emotions. When I'm not happy, I'm not feelin sexy. Also, when I was in my late teens I finally figured out that I need lots of foreplay and I wasn't dating people who knew a damned thing about foreplay (sexual cuddling) and/or pre-foreplay (displays of affection). Sorry those are my own terms to kind of cut down on explanation length. So, anyway maybe you need a good cuddly SO to help you out. Self cuddling is helpful too IME :)