Wow bud, just saw this and am sorry, I hope there's some light immediately around the corner.
Something to think about though,(not sure if this applies only here or nationally) but medical bills do not effect your credit score like a regular bill does, it's the nature of the beast. You could try calling the medical folk and set up a payment plan or apply for county/state assistance in getting help for paying the med. bills, that could help with the mortgage issue and easen the strain a little...