OP I want to suggest you look into a phenomenom known as self sabotage.
Are you able to get a job elsewhere? Your BFs family fired you you said so you were obviously able to work at one point, have you looked into jobs at all? That might give you the confidence to get out and do more and give you some extra money. Being disabled doesn’t mean you have to sit at home and pity yourself 24/7 for the things that have happened to you in the past. A lot of places hire disabled workers, while I’m sure there are challenges it is certainly not impossible