Pain beneath ball of foot

Entered home, took of shoes and boom all of a sudden I get this pain as if I stepped on something. I have had stone bruises before, but this seems different.
There is a small white spot at point of pain and is very tender. It has been 6 days now and no better. Tried all kinds of pads but still limp. I teach Ballroom dancing so have not worked. It is painful even if I do not walk on it. I also have metatarsal neurosa which was diagnosed recently.
Was given Cortisone shots in both feet.
By the way, I told Dr. I was allergic to it but apparently he never checked my chart.
Could there be a relationship??? I know this is a lot but right now the stone bruise or whatever it bad. I also have a lot of numbness in my feet.
A medical challenge, don’t you think???
Thanks so much for a reply. Ann V.