You know, David, it is so freaking weird that you and I seem to experience the same things all the time. Are we stuck in some kind of timey-wimey-thingy? My tummy (euphemism) has been a bit weird all day and there have been a few trips to the loo. Having trouble concentrating, not able to really read. Not really that bad, but certainly out of the ordinary for me. I was wondering if the fish I had last night was a little off.
Anyway, hope you feel better! And good luck with the fast!