Thanks for contacting HCM. Dear patient as you wrote that the pain you felt in chest was found to be due to high blood pressure, so it is pretty clear that pain was not due to broken rib and that the high blood pressure is not due to pain instead it is other way around, the high blood pressure is causing chest pain. You have also not mentioned how is that you are in great shape. Also blood pressure is a multifactorial disease, so even if you are working out and physically fit but your life style and eating habits are not health you can get high blood pressure. You should under go a complete cardiac checkup to rule out any other cardiac problem besides high blood pressure as some times the chest pain is not so innocent. regards