I had some nausea and (as it got worse) a sense of disconnection and a hard time with short-term memory, and a little bit of a headache, but mostly it was visual effects. I first noticed something was going on when I was having trouble seeing my solitaire game on the train. (I was on my way to meet plumtreeblossom for dinner before rehearsal.) Some experimentation showed that I had a blind spot, or nearly blind spot, more or less in the center of my vision. That was the scariest part of the event, because I was afraid that something was going physically wrong with my eye or eyes, like maybe a detached retina. As it got worse, though, I started seeing faint shimmering and flashing geometric shapes, and feeling nauseous, and I knew what it was. By this point I wouldn’t have been able to read without great effort, but I never got to a point where I couldn’t navigate. I got to the restaurant and found plumtreeblossom, who had already ordered me food. I got some ibuprofen from her; it was probably only 15min after I'd originally noticed something wrong that I took it. Things got a bit worse over the course of dinner (although the nausea never got bad enough to interfere with eating; in fact, the food seemed to settle my stomach), but towards the end of dinner I was feeling a bit better and my vision was getting more normal, which made the prospect of participating in rehearsal for a radio drama a bit more realistic. By the time we were done with our food I was distinctly better, and by the time we got to the church basement for rehearsal, I was almost all better, with just a bit of residual headache and nausea and fatigue.
I hope this is not the start of a trend, although if they’re all that mild, it won’t be much of a problem.
Oh, and rehearsal was loads of fun!