According to Jerilynn Prior, M.D., a Canadian clinician, researcher, and professor of endocrinology at the University of British Columbia, premenstrual breast tenderness that occurs at the sides of the breast under the armpits suggests that ovulation has occurred during that cycle. If the breasts are sore up front and over the nipples, it tends to suggest high estrogen, or estrogen dominance, which can indicate a lack of ovulation. Soreness on the sides and the front may indicate that ovulation occurred but that not much progesterone was produced three or four days after ovulation, and thus estrogen dominance is occurring. To reduce symptoms of PMS and eliminate excess ”bad” estrogen we recommend Clear Detox – Hormonal Health. Take 1-2 packets daily for 1-3 months for symptoms of excess estrogen. If symptoms are a result of low progesterone you can try Clear Progesterone by Clear Medicine, Chasteberry Plus by Metagenics, Evening Primrose Oil or ask your Naturopath about about bioidentical progesterone cream.