Science is great!
Much to my disappointment, the nurse administrating my dose refused to let me have the vaccine bottle when I asked if I could keep it. "It's a biohazard." Lady, you are injecting me with the stuff. It is empty and no more a biohazard than an empty insulin jar or aspirin bottle, but sure, say no. I was disappointed.
Had the shot in my right arm to balance out the left of the first dose. At Bob and Suzanne's suggestion, I kept my arm moving for the full 15 minute waiting period, then as much as I could stand for the next hour, in order to keep the soreness down. Let's see how this goes.