My right breast has been causing me a lot of pain the past two weeks. I'm too scared to see my doctor. Breast pain, or mastalgia, can have many possible causes. A sudden case of mastalgia, such as yours, could be caused by an injury or even a poorly fitting bra.
Breast pain is also a common symptom early in pregnancy.
Benign, or non-cancerous, lumps or cysts sometimes cause mastalgia, too. Nursing mothers sometimes have pain from engorgement with milk, usually a few days after childbirth, or from infection or inflammation of the milk ducts. Those are just a few of the possibilities. A visit to your doctor may help figure out what is causing your breast pain and what to do about it. With most serious diseases, including breast cancer, the earlier you get treatment, the better your outcome.