Lately, I feel like things are changing about me, like I'm becoming a different person. My moods tend to be upside down, like I'm beginning to feel depressed alot and want nothing,to do with some people even my boyfriend. And then I start to feel agitated by the simplest things. Things never bothered me before, I just didn't care, to let it bother me.I feel like not caring about anyones feeling and,just doing whatever the hell I want to do.Could I be experiencing a late rebellious stage in my life? I'm 20 turing 21 this year. My boyfriend says its because he's rubbing off on me, but I hate the fact that because of someone else I'm changing or acting a certain way. What could this all actually be?