The big bang theory and first cell?

How do you think the first living organism or cell was made , when the big bang happened life as we know was not possible.

But if matter can not be created or destroyed then the cell or life as we know was made from around us.

Is it possible there was a single chemical reaction that gave spawn to life and began evolution at that very moment.

I have heard there are things living in very extreme conditions once thought nothing could live.

What do you think?

These are just things and ideals forming in my head so in what ways is my thinking wrong,flawed, etc…. What things do I need to consider besides that it is a very big theory and is not proven but still makes me curious.