The doctor, tell or say, please, that can occur or happen for a week prior to the beginning men...

[Light]

The doctor, tell or say, please, that can occur or happen for a week prior to the beginning of a menses? Each cycle at this time I feel a dyscomfort in the bottom part of a stomach or belly.

[Kamenetskij B.A.]

These sensations can be connected with the occured or happened ovulation.