I think i have some sort of mental disorder?

So basically I make up stories about myself all the time...like that i've been abused or sexually abused by past boyfriends/friends and that my parents are awful and neglectful to me (but they're not they're actually really nice) and sometimes I will do stuff like make-up a black eye or bruise on me or actually hit myself with something really hard to make a bruise to make it look like I am being abused. Once I burnt myself (3rd degree) just to go to the hospital and gain sympathy from those at school...I have also attempted to kill myself (cut my wrist and went to hospital) to gain sympathy and attention. All the lies I tell are for sympathy and attention as well. But I only tell my closest friends as if it's something I want to hide but like the bruises and stuff is so people ask and i can say to them 'oh its nothing' and then they obviously think i'm trying to hide something. But i change what stories i want to make up about my life all the time and sometimes i'll change schools to start over and either not lie or make up a whole different story/lie about my life. Do I have a mental disorder...I know what i'm doing but i could never admit it to someone hence why i am asking online...under a false name. I also actually suffered from depression around the time i started doing this...if thats helpful...