long term herceptin for bc mets....

Hi all, I have been on 3 weekly Herceptin for 8 years now, first 7 intravenously with side effects and the last 1 a sub-cut in the leg with no side effects other than a bruised leg . I have regular echo's which are good and I'm scanned every 6 months. I am very fortunate to say it hasn't spread anywhere else. Last week my Oncologist told me that I could stop it if I wanted but not sure what the future holds due to a lack of evidence and studies on Herceptin !. My husband and I talked at length about the pros and cons and decided not to stop. It is a very strange situation to be in considering I never thought id make it to 3 years let alone 8 !!!.    Is there anyone out there in the same boat as I am????