Know where you're coming from. I went through a basal cell carcinoma and similar lumpectomy and radiation in 2008. Besides everything else you are dealing with, it is hard dealing with the fact that you are no longer the rock you thought you were. Having a diagnosis of cancer is weird. Most diseases you feel worse and worse, get diagnosed, get treated and feel better. With cancer you feel absolutely fine, get shocked down to your toes on a normal visit to a doctor for a mammogram, then have to go through surgery, radiation and/or chemo, just to be told you are now fine. Search carefully for your radiation oncologist. Find one that specializes in cancer. Mine has been doing this for 40+ years and keeps up with all the latest research. I went with the 6-1/2 weeks of daily radiation because he said it was still the gold standard. I asked about the one-week treatment but he was not in favor of it as there was yet not enough comparison of the results. I have since seen reports that results are not as good. I went through the radiation with no problems, other than feeling very tired for an hour or so each day after the first two weeks. I had my treatment at 7:30 am, which took less than 15 minutes, was back home in less than an hour. My husband understood that I would conk out on the recliner for an hour at lunch time so we scheduled our day around it and made meals easy (the frozen food section at the supermarket was my good friend). I would recommend that you set up some sort of exercise program for yourself. I take tai chi classes. I had my surgery on a Friday and went back to my tai chi class the following Wednesday. I couldn't lift my arm very high but I persevered. I also started working with a personal trainer 30 minutes, twice a week, once my doctor gave me permission. I also try to walk for 40 minutes a day. My oncologist said my recovery has been remarkable and he credits much of it to the tai chi. I never had arm swelling because tai chi means constant arm movement. The lymph node scar has disappeared and my lumpectomy scar is also quite light. Really, things will get better. Your cancer was caught very early and hopefully it will never reoccur. (Note: I am happy to see all the money being raised for breast cancer and do contribute, but, personally, I never wear pink any more, won't wear the pink ribbon, and certainly won't make a pink ribbon quilt for any cancer survivor. Been there, done that, and don't want to be reminded of it!)