Okay, first off, i'm 15 years old. And the past 9 months or so have been very "weird" for me. It pretty much all started getting out of this long relationship. Which cause alot of stress because of the break up. It seems to be getting better, but the first 4-6 months after the break up I would honestly never be truly happy. Now, it has just turned into mood swings. I noticed whenever I am by myself, I get really down, or you could say "depressed" about anything. My mind is always racing. But when I am with my friends, this all goes away and my personality and thoughts completely change. I can't really get my point across completely, but could I be bipolar? Or anything related to it, or is it just puberty and all that?