I'm a senior in high school and wants to transfer..?

to high school in Tracy, California from Bakersfield, california. Ok. Let's be straight forward so i can get help from you guys. I'm a good kid but i have a step dad. I just turned 18 years old in february and he told me to move out. I don't have job or any place to stay. He just hates me. Literally there is no reason why he kicked me out and my cousins and my mom saw that but what can mom do? i have a half brother from him. So i'm up in Tracy with cousins trying to transfer school. All i got is 3 months to graduate and out of 220 credits, i have 215 credits. All i need is econ cl but there are no high schools i can go to in Tracy because it's all too packed so i was wondering about taking GED. and also i was wondering if i can go to adult school and get that last 5 credits. can anyone give me any ideas or actual help because I don't know ANYTHING about this. Literally NOTHING. so i would appreciate any kind of help. Thanks