Depression, suicidal thoughts, and homeless

So i have been off my meds for a month now. I was on prozac. And this past week ive just been down and easily angered. I can not seem to tell if its from going off my meds or because of how my life is right now. I am 18 and currently homeless living in a vehicle with my bf and sometimes in a hotel. This isnt the first time i have been homeless either. The past two days i have been feeling a bit suicidal and wanting to hurt myself and its taking all of my power not to relapse with cutting and i just dont know what to do my old meds made me feel cloudy and i cant get to the doctor or therapy because they are far away and they dont take clients after 18 anyway. I just dont know what to do or how to feel.