I was told today that i have bulimia nervosa and a severe level of depression?

and i'm only 17yrs old :( i went to a therapist today - parents made me - and they had me fill out questionairs and asked me a bunch of crap, and the therapist said that i definatly have bulimia, and that i fall into the severe depression level. i didnt think i was off that bad! and i was just thinking, i'm only a teen now, will things only get worse as i grow older?