A Few Weeks Ago I Had Pain In My Left

a few weeks ago i had pain in my left big toe........sometimes when i moved/stretched it would crack on its own and feel better, but when i couldnt i would get in to see the chiro.....who would then adjust my knee and ankle and everything would be great.....after a couple visits things were great so i stopped going..........i no longer have the pain but have noticed everytime i sit or lay down that same big toe turns purple