I'd definitely trade the BMW in for a van or large suv if you are homeless, just for pure functionality and comfort. You can park in any Walmart parking lot and sleep there legally, as Goodrum suggested get a Planet Fitness membership, there you can shower off, stay clean and even catch some Decent workouts, for the blood clots baby aspirin daily along with a quality fish oil, krill oil, cod liver oil, and garlic this will help naturally thin the blood, work wise why not try Uber/Door Dash? Or even a decent fast food place like Chipotle, at least you can get some free meals while you save up, if you're living in a car/van cost of living is nothing or close to nothing, within a few months you should have some decent cash saved to Kickstart your life again.