This started yesterday - previously had a slightly sore achilles tendon which I put down to exercise. We went for a 4 mile walk yesterday (fairly slow as DC with us and stopped for lunch in the middle). Since then the achilles pain has gone but my foot has felt cold and tingly ever since. it's spread up as far as my knee now. Not really painful (although foot hurt a bit after walking to shops in lunch hour in heels), just uncomfortable. anyone with any ideas what it could be & should I just wait and see if it goes away? TIA