Hey, I have been dragging around the exact same malady. I already have the Monday 8:40 am doc appt And I skipped the second of my two sprint races this morning because of it. I was glad that I did. Don't feel bad--it's hard for your legs to do their job when they're not getting the full oxygen dose. Go to the doc and get it taken care of. And eat a cookie.
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks