@Shorelle Most likely it hasn't. I've had to do some back reading but I believe you have an estrogen responsive cancer since you are on Tamoxifen. Is that correct?
What are the benefits of knowing?
Well changing treatment paths for a start.
Even if it has returned there is treatment. My sister had advanced metasteses. She lived to see her children marry and even met some of her grandies. It wasn't an easy life but it was filled with love and joy. It was worth having the treatment to stabilise the mets.
Not knowing and just worrying will just make you miserable. What if it hasn't spread and you spend years just being fearful. At least by knowing you can be doing something to improve your health and giving yourself your best shot . Kath x