Your question presumes something outside of observable space-time. We have no way of answering that question, if it is indeed a coherent question, in a way that “what happened before the beginning” is not.
All we can say is that observable space-time has been occupying an increasingly greater volume. That fact does not require another larger, non-space to contain it, nor could we speak meaningfully about it in any scientific sense, since our physical laws could not be presumed operative outside our own observed universe.
Thanks for your response. I’m not trying to be snarky or facetious, I’m just having trouble wrapping my thoughts around these questions. I guess I am just thinking in limited terminology because I believe that to have an “up”, you have to have a corresponding “down”, a “right” for a “left”, and an “inside” must have an “outside”. Thus, since we are “inside” the universe, and it is expanding, then there must be, in my limited thought processes, an “outside” for it to expand in to. Another poster to my question has said that outside the universe is God, and that is good enough for me. I appreciate you taking time to reply, but I am not sure how much I was able to take from it. I will think on it some more and pray I am not overwhelmed.