At will means you only have recourse if there was discrimination or whistle blower type reasons for firing you. Don't waste your time with an attorney. A good attorney will quickly tell you to move on absent those 2 items I mentioned. A bad attorney will string you along with false hopes and you'll be worse for it.
These things always work out for the best. You don't want to work for an employer with no sense of loyalty anyway. You are in a fortunate position to be able to get things on the right track. I got laid off and within 3 months found a job, and 3 months after that found a job that paid twice as much. Now instead of cruising the Toyota forums I'm cruising the Porsche forums.
No offense but it didn't sound like you were in a good position to begin with, probably good to have a catalyst to get some positive changes going. Things always work out for those that work through the tough times. There is nothing wrong with working at Target or Wal Mart to get through it. Tutor on the side, do whatever it takes. Teach abroad for a year.