Talk to a lawyer before pursuing this, but it may make you smile a bit in the midst of your worry so I'll post it here.
You mentioned that you are living off of a student's budget. Does that mean you are a student? If so, did he hire you on a contractual basis? Meaning, without benefits, etc.? If so, you may have a play that will not only get you some $ but make him look absolutely incompetent in front of his investors. It's actually pretty easy to show (in some states anyway) that you should have been compensated as a full-time employee. MA, for instance, is very harsh on owners who hire 'contractors' who do the work that would normally be done by employees. Even if you have a written agreement to the contrary, the court could decide that you were in fact an employee and award you triple damages.
My friend just lost a case like this. It absolutely stunned me (and her, for that matter). She fired an incompetent contractor, and the contractor turned around and sued. And won.
It sent chills up my spine, but if it fits your case then it could work for you as a threat to embarrass him if not even for the money.
But, ffs, talk to a good lawyer!