@kneeper - Thank you for asking! Happily, my scheduling manager is the best, and is giving me every other day to ease me back in. Her direct quote was "We're just getting you back, we don't want to break you again right away!"
Which was good, because yesterday was... unpleasant. I was fine, for the most part, and even agreed to stay an extra 15 minutes (retail. holiday season. yay?

), but it turned into an hour and a half. I did have a stool to sit on between customers, but there was no such thing as 'between'.
I wasn't in pain, but was really very uncomfortable by the time I made it home. The Knee did mellow out, and it became more of an all-over "I've been out of work HOW long?" ache.
I should have taken it easy today, but... As I've been out of commission for three months, the tub really, really needed attention. Really. Because the family doesn't 'see' it, and I do.

Which turned into pulling everything out of the bathroom, scrubbing it all down, and putting it back all shiny and clean again. Which was incredibly satisfying, but not entirely comfortable to do.
So NOW I'm sitting, Guinness at hand an ice pack on knee. I also have tomorrow off, and am planning on spending it watching mindless TV with knitting needles in hand!