This patient support community is for discussions relating to breast cancer, biopsy, genetics, chemotherapy, hormone therapy, lumps, lumpectomy, lymph node dissection, lymphedema, mammograms, mastectomy, radiation therapy, reconstruction, and self exams.
Breast cancer is extremely rare in males. The rib pain could still be due to the strenuous physical activity that you did two weeks ago, especially if a person would continue working and not getting enough rest. The lump can be a sore area, like a bruise or a hematoma (blood collection) underneath the skin which would resolve with time. The negative x-rays and the ultrasound are reassuring. I suggest you observe the lump for any changes and report such to your physician. If it still there after a week or more, then a needly biopsy may be warranted (but this should first be discussed with your doctor).
Regards.