First bone scan

I was diagnosed with triple neg last year and went through treatment, but developed some mild neck pain after radiation for a few months when lying on my side & MO ordered an MRI. The MRI showed a non-discernible lesion in one of my cervical bones but radiology could not tell what it was & MO said it didn't look bright enough for a met. But now she wants to do a nuclear bone scan, in particular due slightly elevated Alkaline Phosphatase. Phosphatase was high last year & went down and I think one PA asked me if I had issues with my bones & I did mention a pre-existing issue with a limb, but no scan was ordered. MO doesn't believe in scans unless issue arises (per recent research), and I guess my composite picture at present is reason for one. In recent weeks though, the neck pain has diminished & is now gone, but I am wondering if the maintenance drug Xeloda I'm on is the cause; is Xeloda strong enough to attack bone mets? I can't seem to find that info. That would of course be bittersweet news, unless Xeloda also works on benign conditions.