Heel pain

I woke up this morning with a sore right heel.  Years ago, an xray showed that I have a bone spur in that heel.  I had arthoscopic surgery on both sides of the foot.  They cut out part of the plantar fasciitis (muscle band that goes from the heel to the toes) to relieve pressure.  That has worked for years, but I am always concerned when I start to get pain in that heel.  So, this evening I went back to the trails and only ran 1.3 miles.