Tired of this swollen foot!!

I sprained my left mettitarsal just over a year ago. The doctor told me that the swelling would eventually go down, and that I should rest so that it would give my foot a break. So I haven’t been very active for about a year now (due to my job), but yet my foot is constantly swollen. My left foot is almost a whole size FATTER than my other foot. I am so tired of this swelling… It gets even worse in then heat. Please tell me if this is normal for a year later, and what I should do about it.