Hi there
I had a mastectomy and axillary clearance but no radiation and I chose not to have reconstruction. The surgery and recovery was really straightforward, practically no pain and mobility in my arm was good within a day or so. Be prepared that you will lose a lot of feeling in your armpit but this will gradually return over time. I had a bit of a problem with fluid (the body produces fluid to assist healing but sometimes gets a bit over excited) but usually this dissipates. Massage may help. Best wishes.