Have you checked PRDA? It might be under the entire record and sorted by date. Or it could be in Vmpf. I mean all else fails you could go to the MPF and see if they can print you off a copy. Also it seems that APFC applications are down at the moment.
You will receive orders from your MPF. Once the MPF receives notice from AFPC you are being medically retired. They will hand you orders. Of course they will be on vMPF shortly thereafter.