Survivor since 2012
Oh, Jacquie. I remember having the same thoughts. The lurking thought that there are a few nasty cells left somewhere is just awful. It goes away after a while, as your mammograms and other tests come back clear and your doctors start to spread out the time between visits.
We really never know. But you've had the appropriate treatment and have been given every chance that all the cancer is gone. Right now you should consider yourself cancer-free. Try to proceed as if you are, because the odds are heavily in your favor. It's easy for me to say, I know. But I just finished chemo in March for my second bout with breast cancer and I'm on the same track you are. I know the chance is always there, but I refuse to let it get me. Every day is a gift and I'm sure you'll get a lot of them!
Hang in there!