I have constant pain in my left foot. Strangely the pain shifts every day; sometimes on the outside edge, then at the base of the big toe, then above the heel, then on the outside ankle, then the inside ankle etc. Also, every morning when I awake, my feet are the same size however after arising, my left foot swells throughout the day. This repeats every day. This condition happened after one of my chronic gout attacks. Any ideas?