Decreased sex drive.. 😩😢

Monay

So I use to be horny like almost all the time. 😂 I wouldn’t mind sex multiple times because I just was that horny. But I have been taking bc pills (since May) and an antidepressant (nortriptyline). But my decrease sex drive just started like a couple of weeks ago. Like I am in no mood for sex at all.. Not even the slightest bit. I haven’t really expressed to my boyfriend how I felt yet.. How do I get my sex drive back up?