Calling all stage iv sisters

[Emy]

I was diagnosed in 2001 with ductal ca...had rt mastectomy...In 2010 incorrectly diagnosed with primary lung cancer, removed lower right lobe of lung and received 16 weeks of chemo for lung ca(wrong chemo....should have been for breast ca)....In 2011 had liver mets, retested all tissues...never had lung cancer, wrong chemo....was breast cancer..in aug 2011, started taking letrozole daily and every 3 weeks Herceptin...tumor markers went down by Dec 2011, now are doubling higher every 3 weeks...dr said letrazole stopped working....any options???
er+, Her2+, PR-