I've just completed day 2 of 5 days radiotherapy on my R breast for Level 1 carcinoma - just the top half and under arm where the scar is from taking lymph nodes. Although it's estrogen & progesterone +ve, I have been told I don't need to add endocrine therapy or chemo. I felt increasingly tired yesterday from about 4 hours after the short bout of radiotherapy and we just heated a frozen meal that night as I wasn't very focused! The night was unusual. I wasn't worried, but I had very vivid dreams and sometimes felt quite hot and I woke more often and took longer to get to sleep. I've been getting some twinges in my right breast, but the left gets some too - in sympathy?