What's wrong with me?

I don't know what's wrong with me. I don't know if it's some form of depression, anxiety, or what. But I stay emotional. Its like I stay so irritated or upset all the time, I've forgotten how to be happy. Everything makes me cry. Lately I have no motivation to do ANYTHING. All I want to do is sleep all the time and keep to myself. I rarely have periods (I have MAYBE two a year, three at most), so maybe it's some kind of hormonal imbalance? I've never been to the gynecologist.. My mom doesn't believe in getting checked out. But I just called and made myself an appointment for Wednesday, the 17th. I'm praying they can give me a little insight as to what is going on with me, and tell me if it has something to do with my hormones.