I'm afraid that doesn't leave me any wiser. If something happened to cause the Big Bang, which created time and space, then it must have happened outside of time and space?? So, where did it happen and what is it that can exist outside of time and space?
If it created space itself and if as the theory states, space at the beggining was less than the size of a pinhead but has since expended, then since ALL space was at the point of creation, it happened EVERYWHERE, I know, that's a lot of "if's."