Drysuit was inflated. I keep off the squeeze and like to keep a little gas in my legs for trim.
I am taking medication for sleep but consulted with a diving physician before ever taking it. I was told it would be out of my system well before I got in the water. I have dove while using this medication for at least a dozen dives now, with no ill effect. I dove the very next day at Madison and had a perfect dive with no symptoms, plus I took the medication the night before. I worked a heck of a lot harder on the dive at Madison than my one at JB, so I am at a loss for an explanation. All I did on my drive home to Atlanta was think about what possibly caused it, I have gone over every option with nothing.
FWIW I dive a rebreather sometimes and have purposely gave myself a (mild) CO2 hit, to know what to expect. Plus during my CCR course my instructor had us breathe CO2 (on the surface), to have an idea of what effect it had on us. This was nothing like I have ever felt, CO2 gives a narrowing of the field of vision, plus a kinda narced feeling. What happened to me at JB, my mind was still sharp, it was just my body telling me to relax and give up. I never felt narced in any way.