Side of foot pain

You could have gout or small fracture.Go to have x-ray to find out.

Do you suffer from arthritis?

Here's info on gout: "The most common sign of gout is a nighttime attack of swelling, tenderness, redness, and sharp pain in your big toe . You can also get gout attacks in your foot, ankle, or knees. The attacks can last a few days or many weeks before the pain goes away. Another attack may not happen for months or years." http://arthritis.webmd.com/tc/gout-topic-overview