What cause breast soreness and heaviness?

Premenstrual pregnan: These are hormonal changes. Some people are also susceptible to similar symptoms with caffeine and chocolate. Also, peri menopausal women are more prone to these symptoms.

Possible reasons: Breast soreness can occur due to stretching from increased fluid retention. Breast pain can occur in conjunction w premenstrual syndrome, ovulation, your period, pregnancy, hormone imbalance or use of oral contraceptives.