Living with ADD (Attention Deficit Disorder)?!

I am 17 and currently a freshman in college (studying culinary). I was recently diagnosed with ADD and i am trying to deal with it. I took ritalin and adderall for 3 weeks and couldnt notice any difference. Due to ADD i have trouble sleeping (i think to f***ing much about life and stupid stuff and i cant stop thinking), I lose track of time WAYYY too often (making me forget to do things, sleep late, get distracted), i cant handle stress at all (if i have more than one thing to do that i dont want to do i feel like dying), i have a TERRIBLE memory, when i doing something im not used to i tend to make tons of mistakes, i have to be showed something more than 10 times to know how to do it, i have tons of thoughts in my mind so if im walking and think of 2 places to go i easily change my mind and do abrupt movements that look kind of "retarded" (no offence to retarded people), i have trouble socializing with new people (i think about how they think of me too much), i dont have much confidence because my mind spaces out a lot and i OVERTHINK things even when i dont care about them, at the end of my day i keep on critisizing every single thing i do (which gets really irritating and makes me depressed if i find something i think i did wrong), i hate reading cuz im bored to and cant develop interest looking at words ( and when i want to read i cant sit through it cuz i just cant focus on it and i daydream when i read so i dont even remeber what i read at the end of the book), I get songs in my head and love to write lyrics and music, I get too nervous around people (especially when im performing something), i want to do stuff but when it comes to the time i have to do them then my mind decides not to, it seems like i dont have control over my mind sometimes, sometimes i just COMPLETELY space out and dont know what im doing, i cant follow orders or instructions, i cant comprehend math, i cant memorize anything (and if i do memorize something i forget it within the same day or week), i cant focus on things i have no interest in no matter how much i try, i occasionally get depressed, i forget things that are important and i remember things that i dont want to remember, at moments i cant sit still, i hate taking notes, since i cant sleep im always tired... Now im trying to drink coffee to stay awake in class but it doesnt do anything and im starting to shake a lot, so i dont know what to do. I gave up taking medications because they made me not want to eat and they didnt help. Does anyone else feel like me? Any suggestions?