Herceptine and bone mets

Hello ladies

Wondered if you can help me on this one. I have been on herceptine, arimidex, zoledex since Jan this year for liver mets - it has worked really well and liver is nearly normal (wow considering 80% covered in tumors in Jan). Thing is having a bone scan as bones really aching especially left thigh and shoulder - but wondered if herceptine is working so well on my liver and therefore reducing tumors would it be possible for mets to appear in bones as hecerptine I thought would be repressing cancer throughout body - daft should have asked onc.

Thanks for you time

Debs