The unpleasant sensation of pain in the chest some women suffer from it during ovulation and a few days after it. These pains can vary greatly in intensity in different women, but the symptom may indicate that ovulation has occurred, and Mature female reproductive cell (ovum) ready for fertilization.

Some women really enjoy this feature, trying to "catch" the days of likely conception, because the soreness of the breast, their small increase in size were due to changes in the hormonal profile in women body during menstrual cycle. As tissue internal genital organs, especially the mucous membrane of the uterus, breast tissue varies cyclically under the influence of female hormones – estrogen (which shall prevail in the first half of the cycle and actually prepare ovulation) and progesterone (promotes the implementation of a fertilized egg in the uterine mucosa and progression of pregnancy).

But mammary gland, in addition to glandular tissue, and connective tissue partitions, which divide it into shares, and neuro-vascular bundles, which are involved in blood supply and innervation of the gland tissue. Therefore, when the temporary development of the glandular component is not is a complete stretching of the connective tissue, which are vessels and nerves are compressed, which explains the special sensitivity of the breast after ovulation.

All of these changes are explained by the influence of estrogens, which are immediately before the time of ovulation reaches its peak value in maternal blood, respectively, the second peak is in a transient increase in the concentration of estrogen for 4-5 days before the expected date of the onset of the next menstruation. But in this case, most gynecologists and their patients prefer to speak about what the woman has signs of premenstrual syndrome (PMS).

Therefore, the appearance of pain in the middle of the menstrual cycle, 12-14 days after the start of the next menstrual period (regardless of the duration of the menstrual bleeding), suggests that ovulation, with high probability, happened.