weight confusion

I like to log my weight every other day in the early morning because that’s our actual weight. I logged my weight like normal and went on about my day, we did a LOT of walking in the big city due to the world cup traffic and had lots of fun.

For some reason I just thought to check my weight today this morning and it’s showing that I’m 4lbs lighter? like whatttt?? I kept checking multiple times and even went on a different scale we have and it’s still ringing up the same. Something is telling me it’s ringing up wrong.