i have a bump on the side of my foot and it hurts when i walk on it. Does anyone know what it is?

it could be a blister. you mite also have flat feet like me. if the bump is like where your ankle is supposed to be but on the other side then you have flat feet. you should see a foot doctor.

It is probably a bunion. You should go to a chiropractor and they will give you some exercises to do and probably a support to put in your shoe when you are playing sports. If it's really bad, you'll need surgery to get it removed, so go asap, because it's really expensive.

Tailor's bunion, also called a bunionette, is an enlargement of the fifth metatarsal bone at the base of the little toe. The metatarsals are the five long bones of the foot. The enlargement that characterizes a tailor's bunion occurs at the metatarsal "head," located at the far end of the bone where it meets the toe.

probably just a bruise

I bet a doctor could tell you, pretty accurately, what it is. Good luck.

Since your head is empty, it might be your brain there on your foot.