No, I haven't tried those, although I generally feel more comfortable when cold than hot, especially around my feet and legs, as I don't want that darned cellulitis back!
Thanks for thinking about me, and I think it is easing a little now, because I am purely resting today.
It's probably a wake-up call for being complacent and overdoing things yesterday - like many of us, I'm great at looking after others, but very bad at looking after myself properly sometimes. (I remember you quite rightly advising caution a few days ago!)
Thanks for your support, William - it's much appreciated.