The person doing the weigh-in tried to convince me that my polyester top (which looks bulky but is not) weighed enough to matter. After I got back I tested this, and it's not the top but the jeans I have on--I think I've been wearing khaki pants most weeks. However, the difference in the 2 weeks' attire is about a half a pound, so that still would have been under a pound of total weight loss.
I really don't expect to lose 2 pounds every week, or even 1 pound every week, but I do think I need to take this as a sign to be more diligent with the food journal, the portion control, and the food choices. And keep up the exercise, but I've been pretty good with that.