sorry to hear you have injured your foot,that is a health and safety issue already at your works, you must never leave any injury unchecked, best advice get it checked and what advice you get to treat it,I hope it helps you.Must of been painful for you, best thing to do for your foot keep checking it keep it clean and prevent it getting septic,keep it covered try not to do to much on that foot f it bad,soon as you see some one medical they can advise better what to do. big hugs xx wishing you a good recovery