Consequences for terminating contract early

I signed on to a 3 month contract in the L.A. area. I have 2 months left to go. I have found that I can't afford it and with each passing day I go more into debt. In addition I hate my job. I feel unsafe because I am always so far behind. I don't know how the nurses on this floor keep up with so much paperwork. I am a nurse with 4 years experience and was quite confident in my previous job coming from ER. But I have heard the same comments from fellow per diem travellers so it's not just me. I also feel very alone, no support from fellow nurses or charge nurse when tings get out of control (every day). Everybody takes care of their 5 patients and thats it. I have a possibility of a job in a hospital recommended from my colleagues in Canada and will find out soon if it is an option. My question is what happens if I terminate my contract early? I pay for my own housing and my own med/dental. And as far as I can tell there is nothing in my contract. Is there anything I am missing? Can they keep my last paycheck? I hate being a quitter but if I stay I might lose my license or complete control of my finances. Please help!