Should i tell my mom i'm not taking my anti-depressant medication?

Yes!: Ideally, your relationship w/your parents is such that you feel comfortable enough that you can tell them anything. Talk to your mom about why you were given prescription for anti-depressant. Ask her if she's noticed any difference for better or worse. Side effects? Benefits? Tell her what you don't like about it in order to explain why you haven't been taking it. This prevents us from upping dose.