Be sure to look under the bed, maybe a big hole developing. I heard of this happening before.
Never heard of a sinkhole developing in this part of the country, but anything's possible, I guess. I just took a walk around outside to inspect, and everything appears normal.
This is a real head scratcher. If it was just me, I'd chalk it up to the effects of working in 106 degree heat all day, but all my kids felt it too.