Menstruation, periodic discharge from the vagina of blood, secretions, and disintegrating mucous membrane that had lined the uterus. 1  The biological significance of the process in humans can best be explained by reference to the reproductive function in other mammals.
Chlamydia is a common sexually transmitted disease (STD) caused by infection with Chlamydia trachomatis. It can cause cervicitis in women and urethritis and proctitis in both men and women.
Chlamydia trachomatis (C. trachomatis) is a bacterium, and C.trachomatis infection is the most common sexually transmitted infection (STI). Both men and women can get chlamydia. When left untreated, chlamydia can cause: 1  Damage to the sex organs.2  Sterility (the inability to have children).bout half of the women with chlamydia do not have symptoms. When symptoms are present, they may include: 1  White, yellow or green discharge (fluid) from the vagina that may have a bad smell. 2  Bleeding between periods. 3  Itching or burning in or around the vagina. 4  Dull pain in the lower abdomen or pelvis.