I Have an itchey small lump on the bottom middle of my foot and when I touch it it stings. This is happening in the same area on both feet. Help.

Shoe string theory. Well, if it was only on one foot, it could be a wart or a foreign body type of reaction. But, since it appears on both feet, in essentially the same location, then there is a possibility of the shoes causing an irritation. Not to deny that you could have developed a wart on both feet at the same time and same location. Even having a foreign body in both feet is not as likely as the shoe theory.
Lump feet. More details regarding onset, duration, order of appearance and inspection would help diagnosis;could be plantar wart?