I was diagnosed about three weeks ago with Whooping Cough of all things, it only took the FOURTH doctor to make the diagnosis (he's a pediatrician, two were internists and one was an emergency room doctor)(I was being treated for bronchitis but wasn;t getting any better); anyway, my ribs were KILLING me from all the coughing. Guess what-my favorite underwire bra was contributing to the pain. As soon as I stopped wearing it and went braless for a couple of days, the excruciating pain subsided. I'm still sore, but nothing like when I was wearing the bra. Lesson: look for the simple things too. BTW, if you want to hear more about my whooping cough, please email me. Pearl Shifer, IBCLC