Firstly, you should never lose your hope. Two years ago in the pretty much the same situation, I received a financial aid package from UT Austin in early May!, which was too late for my case.
Contacting faculty members is a good idea, especially if you have insight on what you want to do, and relevant research experience which may convince a faculty member to give you an RA position.
The other thing that you may want to consider is that if you somehow can afford one semester of your study, you will most probably can find a funding source after a semester or even during the first semester.
Don't give up soon and good luck!