Hello and welcome to JustAnswer.
I'm sorry to hear about your situation and hope I can help.
You should definitely file a workers' compensation claim against the employer. Your employer should have workers' compensation insurance, and to not have workers' compensation insurance is a labor code violation.
Also, you would be eligible for unemployment benefits if you were terminated through no fault of your own and are still ready and available to work.
However, if you're unable to work due to your disability, you wouldn't be eligible for unemployment benefits, and should apply for disability benefits instead.
Finally, I suggest that you contact the Department of Industrial Relations regarding your misclassification as an independent contractor and your employer not having workers' compensation insurance.
If your employer failed to pay you overtime and benefits as an employee, you would be entitled to unpaid wages plus overtime for being misclassified.
You can file a complaint for your employer's labor code violations using the forms available here:http://www.dir.ca.gov/dlse/HowToFileBOFEClaim.htm