GENERAL HISTOLOGY

Detailed explanation-1: -If fertilization does not occur, the endometrium, coupled with blood and mucus from the vagina and cervix (the lower, narrow part of the uterus located between the bladder and the rectum) make up the menstrual flow (also called menses) that leaves the body through the vagina.

Detailed explanation-2: -If the ovum gets fertilized, the zygote gets implanted. However, if fertilization does not occur, the egg withers away and the thick cell lining of the uterus gets removed and discharges the contents through the birth canal. This process is referred to as menstruation.

Detailed explanation-3: -You cannot get your period while you are pregnant, but you might see some bleeding that looks like your period. A true period is the process of shedding your entire uterine lining which cannot happen while you are still pregnant, unless you lose the pregnancy.

Detailed explanation-4: -For those who ovulate and menstruate regularly, ovarian hormone production causes the endometrium to thicken every month in preparation for a potential pregnancy. If the person does not become pregnant, the endometrial lining is shed during the menstrual period.