Thank you for sharing this post. It has helped me so much. I am also 66, I had 3 surgeries prior to radiation for invasive ductal carcinoma, followed by radiation. I am now post- radiation 42 days, and still experiencing daily intense fatigue, brain fog, vertigo. My oncologist is trying to start me on hormone therapy, but keeps needing to take breaks from that, as it intensifies the fatigue, vertigo. I was told some physical issues might get worse after radiation was completed. But when I go into my oncologist's office I'm met with a shocked look and the question, "So, what's the problem"? As if I should be feeling great at this point? However, his nurse did tell me that my current symptoms are common for all of the cancer patients she works with. Usually for several months after treatment, some longer. I think all we can do is what you and I are already doing; eat well, get as much exercise as we can, stay current with our follow-up Doctor visits, & stay hopeful and positive. Take care!