How much should i worry about a swollen foot?

Swollen Foot: Swelling is not normal. I would get it checked out by your physician.

Depends: If it has present for a long time you should see a doctor to find out the cause.

Swollen and worry: As stated , swelling isn't normal . See you podiatrist for an evaluation and don't be surprised if you have more than one doctor evaluating this for the cause .