That's rotten luck Debra, when that parkrun was showing a lot of recovery of your pace. If it's any consolation I was in this same position almost exactly a year ago and still had a good run at Comrades. Stay positive and do whatever exercise you are allowed to do to keep your fitness up. I hope it's not any longer term bone density problem.
A big qualifier weekend. Good luck everyone. Leicester Marathon for me, my home marathon, but I'm not after a time. Facebook reminds me that this time four years ago I ran the qualifier for my first Comrades, 3:40:02 at Abingdon. Comrades let me me off with the 2 seconds and put me in Pen C. I was only going to do that one Comrades. Little did I know.