Hi Doctor I'm Bernadette Just Had My Result From Lumpectomy

Hi doctor I'm Bernadette just had my result from lumpectomy surgery and my doctor said that I am negative from my lymph node and just have 2 mm Tumor which I will be having a radiation in I guess three weeks time from this date. My question is I'm on sick leave for six weeks after that I will be back and works as a Personal Support Worker I will do a lot of lifting is it a good idea to go back to work and at the same time go for my radiation or can I extend my sick leave until I finish my six weeks radiation.