Then, the problem may be in polycystic ovaries, so you will have to see a doctor or a gynecologist.
However, if your breasts are too hairy, the cause may be worse. It could be a result of a hormonal imbalance, usually due to a big level of testosterone.
It could also be as a result of polycystic syndrome of the ovaries, which is also a result of hormonal imbalance.
With cysts, women with this syndrome could have acne, irregular menstrual cycles, longer menstrual bleeding, tendency to gain weight and conception problems. At some women, the syndrome of polycystic ovaries could encourage development of diabetes and heart diseases.