Foreclosure Process andd what happens to the Loan

Hi,
My husband and I are going through the Foreclosure process with Bank of America. We tried to do a Loan modification, but it was denied. I got laid off from my job and I have a lot of medical bills that need to be pay. I'm still very sick and unable to work. The house is located in CT but we live in NY. We don't have money to get a lawyer so we were wondering if we can get some info on how the Foreclosure process works and what happens to the money we still own on this loan to the bank. We believe that we own the bank more money than the house is worth at this time. Even after the foreclosure, can the bank keep looking to get money from us? Thank u for your help.