Bobbi,
I am not a doctor: so what follows may be a complete misunderstanding on my part of what I read in medical news especially when it applies to a perticular person as opposed to averages of many patients.
I am refering to the combination of Tamoxifen with Herceptin your are taking.
How did your onc explain why he chose Tamoxifen instead of an aromatase inhibitor (such as Arimidex,Femara,Aromasin...)?
My concern (perhaps misplaced in your particular case) is the potential of Tamoxifen (once cancer is resistant to it) to promote HER+ tumours.
See this previous post for more details:
http://www.her2support.org/vbulletin...ad.php?t=23945