New pain

I went out to the park alone this afternoon to run the roads.  Just over a mile in the run, I had a sharp pain in my right big toe joint.  I walked a few steps and then started running again.  It came back 3 or 4 times before I completed a 3-mile run.  Right now, the toe or the joint is not sore and I have no idea what caused the sharp pain.  We will see how it goes tomorrow.  With a 10K, 10-Mile and 5K race this weekend, I do not need a problem.