What exactly does it mean if you have really sore and tender nipples and breasts?

Fibrocystic changes: You could have fibrocystic changes. This is the most common cause of breast pain. It can be aggravated by caffeine, stress, menstrual cycle and hormonal supplements. If you are over 40, then you should have a mammogram and ultrasound. Please get evaluated by a breast specialist.

Hormone imbalance: It may be hormone imbalance.You need to see doctor for proper evaluation