I broke my big toe on May 19th and there was so much pain I could not even walk on my foot or even put a sheet on the toe. The toe was swollen and black and blue, by the next day my entire foot swelled up above the ankle. I ended up in an orthopedic shoe and missed a week of work. Dr. said I have to wear the shoe for 8 weeks. The toe is still very sensitive to touch. Thank goodness it summer so I can wear sandals.
I think there must be a lot of nerves in your feet, and I know there is a lot of blood vessels, otherwise you wouldn't have the swelling.
Believe me when I say I feel your pain. :-(