Depression, Bulimia And Insomnia?

okay well first of all i have been very very dpressed for about over a year now. i have all the syptoms, lack of sleep, no interest in pleasurable activities, spending more time alone than with family and friends, less interest in school work etc etc the problem is my parents cant seem to accept that i ahve depression, my mum just tell me to excercise and be more active but i think i need medical help, its driving me insane that nobody understands me, last year i was so depressed i started becoming bulimic kind of, i always tried to make myself throw up although it never worked i attempted it about 5 times a day, and now im starting to have thoughts of starting it up again. i also think i have insomnia, ever since i was a lil kid ive had trouble sleeping but lately i hav been stayin out very late nd i find it very hard to sleep and bla bla bla u kno the rest..so does anyone hav any solutions to help me.. plz i kno it must be annoyin listenin to me complaining and stuff bt i need help..