Thanks Mrs D..

I'll check out the animal stuff on the site.

Can't remember if I've mentioned having periods of "heavy arms" as a symptom as well as the feet pain.
I've had it a few times, particularly in the mornings if I'm rushing around (that's not happening much at the moment.. but it happened today by the time I arrived at the doctor's). My arms feel like lead for a while, then it just goes away.
It feels like I'm doing exactly what the doc said, trying to link symptoms and self diagnosing.
He looked at my vocal cords too, as my voice keeps cracking when I try to talk in my usual, lowish voice range. He didn't see anything untoward.
Now I've just got to stay off google looking for a throat self diagnosis...

Thanks again..