It could be cysts. I don't think she is too young for a mamogram, but it would only be used as a base with the first one I think. Do a breast exam laying flat on your bed with a pillow under one shoulder and do that breast starting in the center and work your way around the nipple going around until you get to the outside, then reverse pillow and do other...........is you feel a lump, let your doctor know....I think a better test would then be an ultrasound. If you are tender it is usually cysts. Be sure and have it checked out!
Madge
How are you doing? I don't know about the breast pain, but would you be allowed to have the doctor have you have a Mammo? I know you are too young to have this done, but I would still see if you can have it done.
I had breast pain most of my life since having periods, but I don't know about having the breast pain when not having a period.