Occasional mastalgia or breast pain happens to most women. It may feel sore, swollen, heavy, dull, sharp, or it may just be tenderness of your breasts. These conditions usually occur due to natural causes (cyclical pain), but sometimes they mean that something is wrong with the woman’s health (non-cyclical), and those issues should be addressed. 

Breast soreness and pain before and during menstruation is a common complaint among women. There are many ways to ease mastalgia, but it depends on the cause:

• Puberty, pregnancy and menopause 
• Improper latching and engorgement during breastfeeding 
• Mastitis 
• Fibrocystitis 
• A fatty acid imbalance 
• Hormone meds intake 
• Bra discomfort

In the case of severe pain, talk to your doctor. 

Sources:

What Causes Sensitive Breasts, healthline.com

Why Do My Breasts Hurt?, webmd.com