I still,get odd stabbing pain every so,often in my lumpectomy breast , and tissue is a little painful still 16 months post surgery and radiation . -seems to be a fairly normal occurence post radiation fibrosis and scar tissue . Having said that , If you’re concerned you should check in with GP just in case it’s a sign of,something more,serious
we have access on Sunshine Coast to a great Breast Cancer physio, and she posts numerous free,info video on breast cancer topics which may help you