Well I just ended a week of diving in Hawaii 2 tanks a day using Nitrox. I didnt go to any depth nor did I hit any deco limits. My last day of diving was the 23rd we got out of the water at 12 noon. The next day we went to the Volcano which was at 4000' but it was 24 hrs later. Then the next day we got on a plane in the evening time which I was then in the air for 13hrs. Today I am just feeling dizzy and disorented and body has been aching. Nothing serious I am just trying to be on the safe side then anything. Also my ears feel like they are stuffed I keep swallowing to clear them a little which could be the reason I am dizzy.
Sounds like you caught something while in the airport / on the plane.