I agree with Eileen. Call your doctor’s office and speak to someone. However, we here on this site have had some major traumas to our legs. That’s going to cause various problems with swelling and odd nerve sensations. Hell, I spent an hour one day looking for a small pebble in between my toes; not because there was one there, but because I had the sensation I felt one. Just some crazy nerve freaking out that day I guess.