Hi Janet and thanks for writing.
I like to have people investigate their symptoms. Is this new? When did it start? What is going on in your life? Did you injure yourself?
Do you find it's always there or does it vary? Is it worse with activity or not? Is it worse with some activities, but not with others?
What happens when you ignore it? When your mind is elsewhere?
If there has been no injury and the symptom is simply an achy back, why worry about it so much?? These things get better over time.