Gg! Or something, I dunno.
It is pretty normal to not feel a lot. I actually felt weighed down by the diagnosis. Different people have different experiences, your feeling is absolutely valid.
I personally choose to not disclose mg diagnosis unless it brings me benefits. Basically I disclose it e.g. when it comes to accommodations (e.g. apartment or in university), and I’ve told a few close friends, but generally I prefer keeping it private.
In the end I think it is important for you to figure out what your diagnosis means for you: is it a part of you, but other parts are independent from it, or does the diagnosis define you? It comes a bit down to the person vs identity first approach.
Also don’t forget the diagnosis doesn’t change you as a person. I’d heavily recommend continuing your life as before, without implementing ant large changes for now. Give it time to settle.
More on the barren-side/minimalism side of the spectrum. However, I also live in a student dorm and move quite a lot, so that also contributes.