Does this theory of the start and evolving shape of the Universe make sense?

You only have a speculation. If you want to create a theory, you should put your comments in the form of tensors that are consistent with general relativity. Your idea must also explain the relative flatness of the universe with a bit of anisotropy that has been detected. That is, your idea has to explain more than the current theories do using the mathematical language of astrophysics.