Thanks, LT.

It's feeling a little better, although I have to go back and get the dressing changed on Wednesday. I have to keep my arm dry in the meantime, which is going to be challenging.

She said that mine wasn't the first such injury she'd seen, so she's becoming more aware of it now.

I found that the lid wouldn't engage, thought I'd got it and went to squeeze the air out.

The water went everywhere, including through a couple of layers of clothing...which saved it from being even worse, I'm told.