Where did my money go?

I just got paid today. I only balance my checkbook on payday, making a 2 week gap between updates. My slush fund in my checking account is gone! I have no idea where it went. It was $100 in December and now in February it's $0. The really sad part is that I can't even begin to tell you where the money went.

I'll have to start watching my spending. And I need to rebuild my slush fund ASAP.