What's wrong with me?

Okay so I've been taking birth control lately (horrible side effects!) & my boyfriend will occasionally touch me to try and get me turned on and I'm just not feeling it. I'm not exaggerating if I say I haven't wanted it for a little over a month now. I don't even use my vibrator. Now previously we got caught by his mom having sex. Could that be the reasoning behind me just not getting horney? It's so difficult for me to be turned on anymore. I'm not sure what the issue is, I'll give in and have sex with my boyfriend if he really wants it that day but I don't climax, I don't crave it, it just kinda happens. And sometimes feels like a chore.... what's wrong with me?