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Ah, phew, thanks Sqad :) A friend was worried that was what they might have but not keen on going to the docs!
Feet have been swelling but not calves I think. That's a relief, thank you.
Bit of an update on my knee - GP thinks it's a problem with the meniscus (sp?) so is seeing about a scan. Got similar pain in one knee but feels like the same thing in both - I seem to have a bad side which cops it worse than the other side first! Weirdly enough it's my worse Meniere's ear side too!