hi i would say that you have just torn a muscle there are muscles that wrap around and go under you breast torn muscles will give lots of pain. try some ibuprofen these should help to ease your pain the best thing is just relax for a few days but if you can find the spot that really hurts the most ice pack this point icing draws extra blood in this aids healing. hope this helps you. good luck
what is in or surrounds the breast and wraps around the side that could be hurt by slamming into a door very hard. i was slamming into a door with my arm and side to get it to lock and felt something pop and then had pain in what feels like the inside of my breast and it wraps around my side under the band of my bra. i have severe osteoporosis and have had 2 spinal fusions in the last six months. i am not use to the diagnosis at 54 years old. i don"t know that i fractured anything as the pain is not excrutiating. but does hurt. would just like to know what is in that vacinity i may have hurt.