Over 2 days on, still no real sign of PEM.
...but, my body appears to be, slightly unhappy. My lower legs and ankles feel like they are made out of glass, energy just pours out of me, simply standing and attempting a slow hobble is exhausting, and either the pain levels or the exertion is making me feel physically sick.
So, no PEM but hardly good.
There is a definite possibility that Wednesday may have been a bad idea.
ETA - I'm actually gaining weight again, 3lb since wednesday (2 days), I'm now back up to 15st 2lb. I am eating more, all 'healthy' foods, no junk or even particularly calorie dense stuff, but nowhere near enough to do more than slightly slow the loss. I suspect it's mainly water being used carry stuff to repair muscle tissue.
ETA2 - after another 24 hours it seems I am now perfectly capable of doing virtually nothing, I can comfortably manage that level of activity with no issues. I am off on Monday morning so I am doing as little as possible to encourage recovery. I am recovering with no apparent signs of PEM, so not ME, just damage from my apparently excessive expectations given the condition it would seem my body is in after such a long time of disuse, coupled with the somewhat bloody minded attitude I have needed to adopt on occasion just to survive with ME.
There is even evidence of advanced cognitive capability, despite trying to catch my next door neighbour, for days, to ask if he could cat sit whilst I was away, I have been unable to. Then it occured to me, drop a note through his door, extremely advanced and sophisticated thinking for me, it's virtually unheard of for me to ask for help, let alone this
So, despite being depressed, I am optimistic

(yes I know i can be a bit odd lol)
ETA 3 - another day, no PEM, bodies okay, still a little grouchy but okay. Back down below 15st, so I assume I was right about the extra weight simply being water helping repair things, and it may also mean that the job is close to finished. Next door has even agreed to make sure the cats okay.
This is bizarre, after 33 years, yes probably not real, just an intermission, but all looking good for my trip tomorrow.