Rest-room theories

I do not know why but I always get inspirational thoughts when I use the rest room. Today I was taking a shower when my mind wandered to the concept of life from a purely scientific perspective. This is weird so let me start by putting together a couple of modern day theories and then I'll expound on my thoughts.

Big Bang Theory:
The whole universe came into being from a gigantic explosion (ala BIG BANG) that took place some gazillion years ago wherein a highly dense ball of fire just exploded and spewed matter of all sorts that ended up as galaxies, stars, planets and stuff: the galaxies drifting further and further away from each other due to the force of the explosion.

My theory:
That big ball of dense matter that exploded was a fertilized egg that just started multiplying into the billions of tiny cells that constitute a living being. In other words, what we call our galaxies constitute a gigantic living organism. The drifting away of galaxies could signify the actual physical growth of the organism. If this is true then the probability that there are other similar gigantic organisms existing on its scale is very high.

Many Worlds Interpretation (Parallel Universes):
The universal state is a quantum superposition of several, possibly infinitely many, states of identical non-communicating parallel universes. A parallel universe or alternate reality in science fiction and fantasy is a self-contained separate reality coexisting with our own. This separate reality can range in size from a small geographic region to an entire new universe, or several universes forming a Multiverse.

My theory:
If we look into our own bodies among the billions of red blood cells moving around or the tissue cells floating in it, it is highly likely that there will be at least one cell, which when stripped down to its constituent atoms, will contain at least one constituent atom which in turn when stripped down to its constituent subatomic particles, will contain at least one subatomic particle that hosts life (intelligent or otherwise). This is a universe parallel to ours on a lower scale. And the gigantic organism of which our galaxy is a part of belongs to a parallel universe adjacent to ours on a higher scale.

If we extrapolate this on both sides of the scale that I am talking about, you get infinite parallel universes. Well that's a mind-numbing thought if ever there was one and I am guessing that further enlightenment is just a poop away.