You are not alone!
There is nothing wrong with feeling overwhelmed. You (we) are dealing with a lot.
About the house - I was there, we had our notice the house was going to be sold. I don't know about where you are, but if you are actively tryign to sell the house yourself, they can't sell it out from under you here. We managed to sell the house.
You are a bit ahead of me though, I still live with AH and he is draining the funds, and we are sinking again in the new house.
Does your 12 year old live with ou?