Before the Big Bang

I don't understand it. Scientists say that things cannot be created nor distroyed. They then turn around and say that we came from nothing.If you trace it all the way back, there had to be a beginning of physical matter. For example: "Oh...we came from minute particles." Well then where did those particles come from?.....and where did we come from that? .....and that? Eventually they are going to run out of thier answers.. Where are we going to turn if not to a creator? Something cannot come from nothing. It is even mathematically impossible. For example, does 0+0=1,000? NO!! I believe that there was in fact a creator.