My sister was diagnosed with breast cancer 10 years ago. She had 3 operations to remove everything from the lymph nodes and then chemo, after which she was given the all clear. She is taking Anastrozole, and in a recent bone scan was told she had developed osteopenia. Last year in February she started complaining of pain in her tailbone area now and again, and constipation, which she thought was probably caused by taking codeine for the pain. The pain has gradually got worse and worse to the point now that she can't sit for long and has trouble sleeping at night. This has been going on for 11 months now and she still has constipation. Her doctor told her that she thought it was just a strain and it would heal in time, so referred her to a physio- she has been doing physio for a couple of months but no improvement. I'm so worried that the breast cancer has metastasised to the tailbone but my sister and my family keep telling me I'm worrying too much and that the doctors know what they're talking about. The pain is so bad now that she has booked an MRI scan after I kept nagging her so that's good. Has anyone else had any experience of bone mets and the symptoms, or just any advice they could give, I'm going out of my mind with worry, thinking that this is the real cause. Thanks.