PlzZzZz help, painful foot can barely walk ;___;?

I had the same thing, it's called severs syndrome, and I got it from years of gymnastics, and it will be very painful if you don't do something about it. Go see a physical therapist immediately. Until then take advil, and drink a lot of water, heat and ice(switch) in 20 minute increments. If you don't take care of it now, you could have permanent damage to your nerves. God Luck:)