Jakay,
I am very sorry this has happened to you. I wanted to share this article with you that quotes many of the doctors who do research on Her2+ bc, although it does not address that specifically:
http://www.medicinenet.com/script/ma...ticlekey=50545. I was trying to find an article I read in the past few months that said that there were no local recurrences, just new primary breast cancers. I think since your original cancer was in the left breast and the new cancer in the right breast that it could be considered a new primary cancer and not a recurrence of the original cancer.
Wishing you the best of luck with your treatment plan,
Hopeful