A big space question?

Ok ive read and watched alot on quantum physics, but what i want to know is how can everything that we know today, everything in the universe, come from nothing? i mean there must have been something before everything, in philosophy, they talk in some groups about waves, no this is talked about in scince too, perhaps in a different format, but lets say basically, everything is yin and yang, we have two sides to everything, you cannot have light without darkness, you cannot have black without white, because you would not be able to understand what one is without the other, but surely the same rules, if you want to call it that, apply to the beggining of all creation. if everything came from nothing, that is to say, if the universe began from nothing then surely before it all happened there must have been something there to contrast it. before the fabric of time or reality came into play there must have been an opposite to these things, so i suppose you can add those as extra questions, what is the opposite of time, and what is the opposite of reality? this might seem ridiculous to you, but its difficult to explain what im trying to ask in words, maybe it cant be explained in words, but in my head i know what im trying to say, i hope you do also. Thank you for any response, and much love from Ireland.