Where did the pre big bang mass come from

Actually, your off a big. The Singularity created the Big Bang and the Galaxies aren't moving away from a central point, like most things do when something explodes in our Universe. In other words, the Big Bang formed the gasses that then cooled and then formed mass and matter (which are basically the same). However, today the Galaxies don't move away from one central point (which is why we can't figure out where the Big Bang "banged" from). Most Galaxies (and Galactic super clusters) are moving away from each other, not some central point. Quantum Mechanics simply describes how the universe works on the level of the very small (and now some think 'the very large' too). While Quantum Mechanics may not have created the Big Bang singularity, it DOES allow for the singularities existence! Meaning that QM describes energy as being able to appear and disappear in 'space' or randomly pop into and out of existence.\

There's a new theory that states that Time may have hidden abilities. Just like in 3D space we can go left-right, up-down, they now believe Time may be able to do the same. That there is no Quantum Uncertainty, there is just certain places 'in time' that these objects can move and that we are unable to 'locate' them because we can't break down Time in this new concept, thus locating where these objects actually are. If we ever are able to find this new part of Time, we will then know where the location of these objects are, thus helping to figure out and remove Quantum Uncertainty

There was no "pre Big Bang" mass.

The Big Bang Theory describes the universe's expansion from a singularity at its temporal origin point, Time Zero. This was the First Cause. All energy in the universe was compressed into zero volume at Time Zero. This region of space with the energy contained within was the singularity.

There was no matter in the early universe. Only energy existed. Matter did not form until shortly *after* Time Zero.

"On the Origin of the Universe": https://sites.google.com/site/alexisbroo…

There is no "pre-big bang" because time only has existed since the start of the universe. So you question does not formally have an answer because it supposes the existence of something that logically does not exist.

I suggest you read up on some philosophy, especially that of St Augustine, who (13 centuries before quantum mechanics) discussed the philosophical issues here.

The answer is in the question... Who or what created it ? That is the answer !!

The Big Bang begins at time 0 and there is nothing before that.