Let me know what the doctor says. Keep in mind if it does come back – it will probably come back in the brain, bones, lung or as liver cancer, That's what I keep in mind.
On another note – I went to a cancer talk on 9/12. It was really interesting – they had a panel of 6 doctors, to talk about re-occurrence.
The most interesting fact was that even people with a bi-lateral mastectomy, have the same rate of re-occurrence, as those that had other treatments. Because some breast tissue is left behind even < 2%, so this does not change the re-occurrence factor. They said they are trying to talk most women out of this for that reason. I learned a lot of stuff there.