Depression

I'm not sure what's wrong but here lately everything has been going wrong in my life . I'm 17 I completed school a year early and moved out of my parents house the same day I finished .. I work a full time job and usually get overtime about 50 hours if not more . I wrecked my truck recently and I have been with my boyfriend for 6 months not long but everything has been going good besides my truck being totaled out . I just can't get out of this mood where I'm literally depressed all the time.. I haven't  ate anything in 2 days and just don't have an appetite to eat. I just sit and cry until I have to go to work .. So how do y'all get out of a funk y'all go through ? I need to know something I'm going insane ..