Hi Marge

You definitely don't have to just put up with it. Have you been to a specialist for a diagnosis yet? When I had my back problem last year I basically threw the kitchen sink at it - sports physiotherapist/back specialist, prescribed exercises, massage and acupuncture and all that pretty much did the job. I still do the exercises most mornings. But it will depend on the problem of course.

Marge

Do you look down when you run or at the road/middle distance well ahead?

If the former this will contribute to  your back pain as it is those poor back muscles that have to hold the weight of your head.

Instead try standing tall as if there is a string coming out of the top of your head, now look up, and ahead and off you go. Basically, it could just be as simple as improving your posture.

Good luck with it.....  

Where is the pain - is it lower back.  I recommend pilates to strengthen your core muscles to provide better support to your back.