Breast pain in medical language is called mastalgia.
Breast pain (mastalgia) — a common complaint among women — can include breast tenderness, sharp burning pain or tightness in your breast tissue. The pain may be constant or it may occur only occasionally. Breast pain can range from mild to severe.
Most times, breast pain signals a noncancerous (benign) breast condition and rarely indicates breast cancer. Still, unexplained breast pain that doesn't go away after one or two menstrual cycles or that persists after menopause needs to be evaluated by your doctor.
Most cases of breast pain are classified as either cyclic or noncyclic.
Cyclic breast pain:
Clearly related to the menstrual cycle
Described as dull, heavy or aching
Usually affects both breasts
More likely to affect women in their 20s and 30s before menopause as well as women in their 40s who are transitioning to menopause
Noncyclic breast pain:
Unrelated to the menstrual cycle
Usually affects one breast, in a localized area, but may spread more diffusely across the breast
Most likely to affect women after menopause
When to see a doctor
Make an appointment with your doctor if breast pain continues daily for more than a couple of weeks; Occurs in one specific area of your breast; Seems to be getting worse over time; Interferes with daily activities.
Probable risk factors for breast pain include:
Reproductive hormones
Breast structure
Fatty acid imbalance
Certain hormonal medications
Breast size
Breast surgery
Source:
https://www.mayoclinic.org/diseases-conditions/breast-pain/symptoms-causes/syc-20350423