I’ve been depressed. First I thought it was normal but then things started to get worse. Two years a ago I cut myself. I did not tell anyone about it including my parents because I know they will get mad. After that I was okay. For this past few months my depression is getting really bad, my cousin got married yesterday but I cried at the back thinking I’m worthless hopeless etc. It is really a bad timing and I hate myself for that. But that night I was really happy and very energetic. I could not sleep, I sleep for just a few hours and woke up early in the morning. I’m 14 and I don’t have any hormonal problems.
I think its improbable that we could even try to diagnose what's going on with you. This is when I think its best to talk to someone in person if possible -- a counselor, a therapist, someone you trust. Bipolar isn't marked by how rapid or extreme the mood swings are, for example you could be majorly "depressed" for months on end and then suddenly have a few high days, that we deem "mania." I think getting some real-life help would be best. I think talking to someone about your emotional state and also the previous cutting would be good. Either way, you'll need to learn how to cope with the sudden changes inside of you. Stay strong and please avoid hurting yourself. You are worth so much more than that. :)