It could be a bone spur. Grapeseed extract (two tablets a day taken orally) could help to dissolve it. Also soaking your foot in warm water to which you add 1 cup of vinegar and then massaging it could help break up the spurs.
Hi Shell, you need to have an xray to confirm what it is> why put yourself in pain when an xray will let you know so you can get some treatment.