Whilst rare, not unheard of. That said, believe it or not, pain is a very good sign. Most BC's tend to be non-painful. A number of those, that do hurt, hurt because they're pressing on a nerve. At your age, it's most likely hormonal, but as the person above stated, it's always worth getting it checked out.
I am sorry to learn that you are having symptoms that you are worried about.
The best person to discuss this with would be your GP. It is only a doctor who can assess you, and say what the cause of your symptoms might be.
It is important to know that breast cancer in someone of your age is rare and as ProfBraw has mentioned pain is not a common symptom of breast cancer. However, there can be several noncancerous causes of breast pain. For example, many women have breast pain as part of their normal menstrual cycle, this is called cyclical breast pain.
I hope you can get an appointment with your GP soon and can get some reassurance. Do feel free to come back to us if you need any further information.
