Can someone tell me if this is normal?!?

ok, so can some one tell me if i have some type of disorder. the past two years i was some what depressed , very depressed and looking back on it. it seems like i was almost in a coma very unhappy and insecure didnt go out at all and had a period were i had food issues and cut myself a few times. it was due to the living situation (im a military brat and move alot) and i just didnt fit in. also family issues. then we moved and i am a freshman in college. things started changing dramatically. i started to get happier and feel alive but totally different from my former self. and now that im seperate from most of my family im just definantly turning into another person. ive noticed how fidgety i am, and how i dont sleep that much anymore and even when i try i dont get good sleep so im always tired or fatigued. then there is like this pressured speech thing going on where i talk so fast the words just dont seem to come out fast enough. and i feel creative all of the sudden and ive started painting and writing and hiking. i have thoughts racing through my head and cant focus. i always get inspired by the most random things and think about changing myself based off these people. and then theres the whole trusting issue thing. i dont trust anyone at first and am quite cynical. especiallywhen it comes to relationships. i cant focus at all. and i laugh to myself all the time about things and people ask me what the hell im laughing about but its just i dont think itll make sense if i say it. anyways im starting to freak out! i dont know if i should get diagnosed or what? please help