My right foot is swollen. what should i do?

See your doctor: Many things can cause swelling of the feet. I would recommend evaluation by your primary care physician or a podiatrist.

Many possibilties: Was there an injury? Could also be a circulatory problem, infection, gout or other systemic manefestation. See podiatrist anfd primary care physician.

Not enough: Info. Many things can cause swelling. I recommend a visit to your local foot doc, x-rays may be needed.