Why Me?!?

So, our house isn't "officially" under contract. It seems that the folks that were going to buy our home never brought the earnest check to the realtor. So that means that the contract was never brought to the title company which means...no fucking contract! My stress level went from really good to OMG I want to cry. I was just so happy to have one of the houses "sold." They've asked for a couple of more days to think about it. Do we do that or put it back on the market? I know that the hubby had one more person to look at it and so did I. Why would you go to the realtor's office with us and do all the paperwork if you weren't totally set on buying it? Fuck this sucks!