Tymlos And Back Pain

Have been managing my back pain for several years. Started Tymlos on April 24th. No side effects, except after two weeks giving myself Tymlos injections, developed horrible pain in my vertebrae and unable to get out of this pain cycle with my usual medications, exercise and my most treasured possession, my heating pad!
Has anyone else experienced the same? If so, is this a side effect that subsided? Any other suggestions welcome.