This is a real need for emergency housing voucher

I am 63 disabled female victim of domestic violence and have internal bleeding and homeless living in a van. I left California because of domestic violence and have been trying to get into some kind of housing I have called and seen everyone possible I can see a doctor here but can’t get medication unless I’m in California. My condition is not getting better now I get very dizzy and sick to stomach. I am in dire need of housing NOW. Do I need to go back to the violence in order to get medical help. I keep hearing about these vouchers but keep getting turned down. I’m afraid I’ll be dead before I get help