Now this is tough situation. The school might be starting within couple of weeks and you have to get into it. So, you  might have list of very few schools which can take the admission within those days. Another things is you are going to grad school. admission to the grad school usually takes longtime (i think- i might be wrong too). so the best way is to find a school of any kind and ask them by telephone if they still consider graduate application due to bla bla condition. emailing and getting answer might take tiime- everyday counts for you. if not graduate school, you can try application to undergrad for major that might be related with you major.  for eg. u can apply for maths major if you have a degree in computer science. if you make it, you can drop it later before applying for real school in summer or fall.

i am not sure about the california, but when i was in new york, a couple of my friends went to a language center, take class(es), the center will make you a document that will work as a I-20 for the student. you might want to find if such things are found in your/nearby city.
Goodluck.