Mass Effect

So we believe that there is a certain amount of energy in our Universe. We believe that our system is a closed system, we keep the same amount of energy in our Universe as there was at the time before the Big Bang. So is our Universes Vacuum related to the amount of energy/mass inside of the vacuum? I believe that the Expansion of our Universe is related to it. Was our Universe pumped up with energy before the Big Bang? Well the vacuum would have already needed to have been collapsed for it to have been pumped full of matter/energy. Or particles small enough to not be affected by the extreme heat and pressure? They had to come from somewhere. The energy that was inside the vacuum did not create itself.

People often keep saying that if the matter/energy, was just staying in this small compact area it would need a start to set off the expansion. But this is strange. If the Vacuum of space was what was keeping pressure on the matter/energy inside the vacuum and the matter/energy was causing the vacuum to keep pressure on the matter/energy than we have a problem. This would seem to indicate that the amount of mass/energy inside the collapsed vacuum was REDUCED. A REDUCTION in the item causing the vacuum to be compacted would allow the vacuum to escape the forced compact state held in place by the amount of matter/energy inside the collapsed vacuum.

Someone said that a blackhole could create other Universes but the amount of energy inside of our Vacuum at the start of the Big Bang would have had to have been very high. How could that much energy get put inside of a already collapsed vacuum? How would a vacuum collapse without having mass with a gravitational pull to collapse it? Especially if what causes the vacuum collapse is the amount of matter/energy? Even if ALL of the matter/energy appeared in the Universe at the same time the Vacuum would not be collapsed so the matter and energy would have spread out fast without the need for an expanding vacuum to spread it out.

ALSO if the Universe had a start the Vacuum would seem to have needed to exist before the matter/energy inside of it. If the Vacuum existed before the matter/energy, how far would it have been expanded out with a gravitational pull of 0.0 on it and a time frame of infinity. Would it expand infinitely fast for an infinite distance? Is there a top limit on the distance and speed a Universes vacuum can expand?

Was the Universe somehow lacking a vacuum before there was matter? Did the vacuum appear when the first particle appeared?

I know the big Bang is described as having no space/time or known laws of physics before the Big Bang but if there is nothing for the particles to appear into there can be no particles. If the first particle appears and there is no space or time then we end up making up some new type of space/time for our particle to live in.