Welcome to the board! I'm sorry that you have to be here.
We're MFI too. DH was diagnosed with Azoospermia almost exactly a year ago. I remember going through a lot of the emotions and chaos that you're describing. It feels so scary and alone, especially at first. It does get easier though, and there are a lot of options out there. This board and the MFI check-in have been amazingly helpful for me as we go through it. It's nice to have other people who get it.
I saw that you're on the Boston board; we're from south of the city. Do you have a urologist yet? DH saw a guy at Boston Medical who was really great if you need a recommendation. Or if you ever just need to talk you can PM me.