Peas sized bony lump on top of foot.?

Question: I go barefoot a lot at home, wear very loose sneakers, but all of a sudden i have discovered a peas sized bony feeling bump right below my big toe but NOT where you find bunions. Its BELOW the joint of the big toe...It doesnt hurt and its not red. I am concerned though, about it getting bigger if i dont nip it now... what could it be?