Hi Fiona,
Sorry, I have not posted on your thread but this makes me NEED to: You said
"However, since I got home, I have been spending 22-22.5 hours lying down, and 2-3 of those with my 'nose above toes', so maybe that helps? Ice helps too, as you all know.". Your toes need to be elevated - so it's TOES ABOVE NOSE. Otherwise you're doing exactly opposite with your leg down. Good luck on your recovery