You seem to use metaphysics in a New Age sense, which isn't how philosophy defines it. To get an idea of how philosophy defines metaphysics, check out this Wikipedia page.
With that said, is it possible to communicate a metaphysical experience? Let's break this down:
- Is there such a thing as metaphysics?
- Can one have a metaphysical experience?
- Can one communicate a metaphysical experience?
(1) is there any such thing as metaphysics? Some philosophers reject metaphysics or at least the attempt to talk about it. Hume, Carnap, Ayer and Wittgenstein all fall into this camp.
Among those who think metaphysics exists or that we can talk about it, how many think (2) is plausible? This depends on how they view human experience. Those who hold that humans are material beings in a material reality would say that our experience arises from material interactions. This would seem to rule out metaphysical experiences which would require "stepping outside" of material reality to see the foundations.
What if instead of experiencing the metaphysical, you infer it? Well logic is a symbolic, well structured process that proceeds from agreed-upon premises via well-defined rules to conclusions. By definition, this process can be communicated, and is communicated every day.
Ok, well what if you hold (1) and (2), how does (3) fare? Now we're into speculative territory. I doubt (3) would hold as your experience would likely be ineffable.
Ineffability is a big problem. To see what a challenge it is, imagine trying to explain the color red to someone who is blind from birth. When I tell someone that a dish was salty, I can only say this because I assume they have experienced saltiness and thus can attach their experience to that label. However, that label does nothing to communicate the experience itself. In short, language only works because there's a shared base of experience we can draw upon, which allows us to bypass the ineffability problem. With (3) you wouldn't have this common ground.
At this point, you might have to take a page out of the mystics' playbook and try to explain by analogies or get people to experience what you experienced.