what can i do to help with feet that aee retaining water. i'm not pregnant

My left foot has been a bit swolen with retaining water for almost a year. Now the foot spurs on the top of my right foot are causing it to retain water. My spurs have not bothered me for a long time but recently flared up again. I am currently taking tissue salts and trameel from a homeopathy right foot is worse than my left. My doctor says to stay off them and elavate as much as possible.