Good morning @fue! I have had breast pain, radiating out to my armpit as well. My doctor ordered a mammogram and breast ultrasound. Everything came back perfect. She ruled out cancer, cysts, or enlarged lymph nodes in the surrounding area. It's non-cyclical and not related to exercise or injury. Just a very tender area, with no explanation. I was told it's tender breast tissue and not to worry about it. But it's not going away either and we're heading into month 3 of this.,,