My Foot Has Been Swollen For About 3 Weeks. Once

my foot has been swollen for about 3 weeks. Once I have been walking on it all day it is super swollen. The pain seems to travel through out the weeks. First, was my big toe bone and now the pain is mostly in the fourth toe bone. Sometimes I can feel a wave of pain traveling down the bone or what I think is the bone. The swelling goes down on the weekend, but it is still tender and if I have been sitting down, it takes me a while to get up and allow my feet to adjust to walking again. I have been wrapping it with a stretchy bandaid wrap, not to tight, it takes the swelling down, but it is still a little painful. My walk to my office is probably 1/2 mile or a quarter mile, this is when the swelling starts, when I am home on the weekend, it does not swell