xeloda/tykerb for early stagers?

[lovey]

hi everyone,
I, 36 year old, was diagnosed with stage 2B, ER/PR-, her2+ with 2/12 nodes positive in august 2009. I had 2 dose densed Ac, but was stopped due to heart side-effects . My chemo was switched to TCH, but only can complete 2 cycles before i developed interstitial pneumonia, ? drug induced lung toxicity. My pulmonologist advised not to reintroduced same drugs since my respiratory fuction test left me with 33% normal function. my oncologist started me for xeloda for 4 cycles and tykerb for 1 year. I know this combo drugs has been approved for stage 4 patients with promising results. Anybody on board has this combo but not stage 4 and what is the result of the effectiveness? I'm worried and sad that i cannot complete standard treatment especially herceptin. I know many women had good results with herceptin....i,m so worried that my cancer is under treated and afraid of recurrence...but what can I do if my lungs fail me....Thank you for responding.