Throughout my life, I’ve had wondrous experiences that have lasted from a few seconds to three-and-a-half days. I call them my “real” life experiences. Since you talk about dimensions, maybe I have to look at it as if I’ve lived those moments in another dimension.

Yes.
How I explain this is that I have seen the building blocks of the universe in everything, and I recognized it as pure oneness, pure love, pure God. So what do I do with that?

It sounds as if you have been experiencing higher dimensions. Those kinds of experiences can be gifts. They can be given as a window, a taste, to support (what you might call) inspiration for further growth. If they do not last, it is a sign that there is more foundational work to do for those to become your ground of being, your default home. At some point, that will be your ongoing reality, just as the third dimension is the ongoing reality for most beings on Earth.