Hi, Welcome to healthcaremagic,
From your description it shows that you are having planter wart
Planter wart at foot or toe is because of Human Papilloma Virus
It is a self limiting disease. But if the size of the wart is big, painful and to shorten the duration it should be treated.
Treatment by cauterization
or by liquid application or by medicated band-aid.
Do not wear tight shoes or other person's shoes.