While a lot of women with breast pain are rightfully very, very worried the first time they experience it, most of the time, it's nothing to worry about, says Raquel B. Dardik, MD of the NYU Langone Medical Center. It turns out that breast pain is a lot more common — and harmless — than you might think.
If you're worried about your breast pain, especially if it's sudden, severe, or seems to be related to a new lump, that should be investigated by your doctor. However, it can ease your mind to know that breast pain is more often associated with a bunch of other (sometimes surprising) things. The way you work out, the medications you take, and your period can all cause some unfortunate soreness in your breasts.