No, personally I don't get that, but my mom does. One minute she's extremely happy then one minute she's sad and in tears for almost no reason. She's bipolar and it can be you too. Read my bipolar info article here:
http://www.virtualteen.org/forums/sh...ad.php?t=13605
If this sounds like you then you should visit a shrink or psychiatrist. That's the only way to solve the problem.