I am on my second pen of Tymlos and for me most of the side effects have now disappeared even though at first they were considerable. I still get some occasional bone pain in at night. But the fatigue and the headaches are gone. I get a touch of lightheadedness shortly after the injection and that does not last more than 15 minutes or so. I guess I am very fortunate when I read about other people suffering side effects. However, at 5 ‘5” and 108 pounds. I wonder if I should be taking the full eight clicks or if I’m overdosing. I also have stage zero chronic lymphocytic leukemia, which is a bone marrow cancer of the blood. While I do not currently require treatment for this bone marrow cancer, I am scared that treating my bone density deficiency might awaken the cancer. Nothing is easy for us.