Healthing?

I went running yesterday. It took a great deal of motivation to push myself outside. I decided to put on my workout clothes and shoes. That helped a little bit. Then I went on the balcony to test the weather. It was definitely 40 degrees, which is my threshold temperature.  I ran about 1.5 miles. I felt really good and quite accomplished afterwards.  But today my ankle hurts.  Was it truly healthy to run if I am experiencing pain today?