i know the feeling of not knowing where to turn now..........
the way i did it was to apply to the university as a foreign student.......... in TX they don't care if you are documented or not as long as you can pay the tuition. in tx there is a waiver for Mexican students to pay in state tuition so that has been a great help. i only qualify for state funds not federal funds when it comes to financial aid. I get some financial aid to cover tuition about $2000 a semester and usually have to pay books out of my own pocket. I work hard to keep my grades up so that i continually get my financial aid.
i don't know how things work where your at. i recommend you go talk to the foreign student advisor at the university you want to attend..........
hope things work out
best of luck