To be fair, it was a 12 hour operation (had some lymph nodes removed and microsurgery) and I was and am still on painkillers but I feel terrible still. I'm so exhausted that I feel jet lagged even first thing in the morning after a good night's sleep.
I've been back at work a few days because I'm self employed and can't afford to take any more time off. On my day off I went back to bed after the school run, slept until 2.45, did the pick up and went back to bed at the same time as my children at 7.30. It made no difference whatsoever. I expected to feel a tiny bit better, day by day, but that doesn't seem to be happening 
I'm starting to get really worried, AIBU to think this isn't normal?