Financial help during time of crisis

I have been diagnosed with cancer. Tumors found in left lung and liver. Biopsy was done yesterday on the liver. My wife and I have taken medical leave from our jobs. The only income we will have coming in for the next 3 months is my short term disability, approximately $300 per week. After that runs out all we will have is my social security which is $861 per month. It looks like a long bout of chemo will be coming. We relocated to North Carolina for 2 reasons, 1) the Cancer Center here and my son's invite to stay with him while we go through this difficult time.

My question is this, we are walking away from our mortgage in Florida, the mortgage is more than my social security check. We have a car payment in which we are trying to work out a much lower payment for the next 6 months. We pay for our own food and gas. It also looks like we will file bankruptcy on 2 credit cards we have which amount to about $10k.
My question is, is there any organizations we can appeal to to help us out financially? We are new to this area of High Point,NC and don't know where to turn. Medical bills are already putting a dent in our cash situation. We have a cushion of about $4000 in cash and like I said for the next 3 months $300 a week from disability and then down to $861 month. Any advice or organizations we can appeal to would be appreciated.
Thank you.