That is weird. But at least no damage done. So THREE people in the past two days have not asked me, but TOLD me that I've lost weight, including, "You've lost weight, haven't you?"..."You're skinny."...and "You're thin, you're thinner aren't you?" YAY!!!!
I wonder if it as to do with the fact that you ran Wednesday. For some reason, I always have a drop not the day after I run, but a couple days later. I ran in the evening on 9/26, 9/30, 10/3, and 10/9 and I had biggish drops 9/29, 10/2and3, 10/6, and 10/12. That's not enough data points to be sure (and I really can't explain why there is a lag), but it is an odd pattern.