On Zelboraf. Pain in right shoulder blade. Thoughts?

I have been on Z since Feb 2013 with only one "holiday" from the med.  liver met shrank from 4cm to 2.2 from Feb to Apri while on met. Have been having the joint pain associated with Z since the beginning. Yesterday afternoon started having some mild discomfort in my right shoulder blade exascerbated when I take a deep or semi deep breath.  Go worse as the night wore on.  Now sharp pain on deep breath.  Has anyone had the joint pain in your shoulder blade or do you think it could be something else?

I have been on Z since Feb 2013 with only one "holiday" from the med.  liver met shrank from 4cm to 2.2 from Feb to Apri while on met. Have been having the joint pain associated with Z since the beginning. Yesterday afternoon started having some mild discomfort in my right shoulder blade exascerbated when I take a deep or semi deep breath.  Go worse as the night wore on.  Now sharp pain on deep breath.  Has anyone had the joint pain in your shoulder blade or do you think it could be something else?

I had some small nodules in lungs on scans in Feb and April.  no change in April. Too small to call mass. No PET yet to see if they show up hot. Also, have lytic lesions on spine. One causing fractured verterbrae.  Had radiation on it Sept 2012. Have not had any pain from fracture in couple months.

Do you think this is just from Z or could it be lung mets or bone mets? I figured I would give it a couple days and see if it got better like the joint pain from the Z does; if not, then I go see my Oncologist. Thought I would ask you guys in meantime.

Thanks in advance.

Becky in Alabama