Hi @Dandelion, I had a left mastectomy last August with 3 positive nodes. I had 16 rounds of chemo, due to widespread lymphovascular invasion. I am currently having radiation, completed 8 out of 25. I developed lymphodema before radiation & my therapist thinks it was due to chemo even though I had 12 nodes removed. It is mild & I am wearing a sleeve. I had my arm measured very early just in case so it was a baseline. I haven't shaved since mastectomy as hair hasn't grown back & I still have a lot of numbness in my arm 8 months on. I am a side sleeper too & found it difficult at first but am now sleeping on my side. Don't worry too much about osteopenia, most people over a certain age have it. I do too & have just started Femara. One day at a time & try not to think about things that may not happen, best wishes!