I had a sore big toe one time.
As if I'd really banged it up the sofa or somewhere, really sore,
Lasted about 2/3 days, then the next morning couldn't move around very well,
had to come down the stairs holding onto the rail, and side ways, couldn't bend well,
every movement hurt like crazy, even my gums hurt when I eat anything,
As for going up stairs to toilet, or to bed, I had to crawl up.
Just couldn't believe what was going on, it was like I was 100 years old or something...
Went to the doctor, he said at the time don't know what it is, took bloods, and said
it's like you've got a really bad flare up of arthritis, (but I don't have arthritis,)
And he referred me off to a specialist.
Bloods came back and nurse said that ( whatever they were looking for) was really really high, almost off the scale, by the time my appointment came through for the specialist I'd got better.! Not a stiff joint, or pain anywhere!
Specialist said that he thought I'd caught some kind of virus, and it had done that to me!
So maybe you could have something like that, just a thought...