Just lost my job (Fri). Surgery scheduled for Monday. What should I be doing for/with health insurance?

Title says most of it. I just lost my job about an hour ago.. completely out of the blue and never hinted at. I have a $1,600 surgery scheduled for Monday that was going to go towards my deductible.

1. Will my current insurance still be valid for this?

2. If yes to #1, would it be better/possible to get a new plan before Monday - so that the surgery applies to that deductible?

3. If no to #2 - does money spent towards a deductible on one policy ever transfer to a new one?

Any other advice regarding the health insurance situation would be greatly appreciated. Still a little shocked and baffled at the moment.