dear clair
sorry to hear of your problem
i have two ideas to consider regards this problem
First to detox any heavy metals,poison...etc a good detox would be to use 'bentonite clay' internally with lots of water drink this 3x per day
more on bentonite clay www.shirleys-wellness-cafe.com go to searchbox type bentonite clay
Secondly in Reflexology there is a connection of all major organs to the foot area,you might want to see directly where this went in your foot and map it to its matching organ,this might make some sense after.www.dk.com/reflexology


Regards homeopathy yes silica is indicated but as the previous post mentioned you should prob see a classical homeopath for entire case taking just to make sure you have proper follow up.
Gina Tyler