Keep existing treatment or get a second opinion?

[dearjilly]

Hello everyone, I was wondering if you could help me with my decision for getting a second opinion. Right now I am on herceptin only, with tamoxifen. I had radiosurgery for a brain met. I know that many of you are on lapatinib as well. My doctor is holding off with that drug until she sees progression. Right now, the brain met has shrunk with no new lesions and herceptin seems to be working. She wants to keep me on herceptin, as long as my heart will take it. Once they take me off of herceptin, the government won't let me go back on. (I live in Canada)
I was looking in to the vaccine trial for her2 and asked my doc about it, but she seems to be against the idea, because right now, my treatment is working for me and why change anything. This makes sense to me, but it is coming from a doctor who said that statistically, I have so many years to live. (I didn't ask to know about statistics by the way). I love this doctor, but if the person who is choosing my treatment is someone who thinks I'm going to live only until a certain time, is she the right person for the job?
Thanks everyone. I guess I have some thinking to do. I feel better know that I have gotten this all out in writing.
Much love to you all and any advice would be appreciated.
Jill xoxo