This is probably related to hormone fluctuations even though you have been off bc for 5 months.
If this persists, please consult your physician about this.
Cyclic pain is the most common type of breast pain. It may be caused by the normal monthly changes in hormones. This pain usually occurs in both breasts. It is generally described as a heaviness or soreness that radiates to the armpit and arm. The pain is usually most severe before a menstrual period and is often relieved when a period ends.
Noncyclic pain is most common in women 30 to 50 years of age. It may occur in only one breast. It is often described as a sharp, burning pain that occurs in one area of a breast. Occasionally, noncyclic pain may be caused by a fibroadenoma or a cyst. If the cause of noncyclic pain can be found, treating the cause may relieve the pain.
Breast pain can get worse with changes in your hormone levels or changes in the medicines you are taking. Stress can also affect breast pain. You are more likely to have breast pain before menopause than after menopause.