Advice needed

I 18(F) have been asked to leave a couple of days after my birthday. My mum is an alcoholic and my dad has never been on the scene. I don’t have any friends nor family so i’m looking for advice on how to handle the situation. I’m in the south of UK for context. I do work part time as i’m currently at college but only about £100 a week which is just enough to cover the costs of food and my car (this is where i’ve been sleeping). When i start uni in september i was hoping i would get student accommodation but it all seems out of my price range and it isn’t really the immediate solution i was looking for. I’m epileptic too, but i can’t afford my prescriptions and im too embarrassed to tell the pharmacy that and try and ask for it for free. Any advice?