Every month when you start your menstrual cycle It starts with rusty or brown discharge blood and it ends the same way why?

Menstrual blood is made up of the lining of the uterus (the endometrium) and blood. During menstruation, the endometrium sheds and is expelled from the body through the vagina. The first day or two of menstruation, the blood may be rusty or brown in color. This is because the blood has been sitting in the uterus for a few days before it is expelled, and the iron in the blood has oxidized, giving it a brownish color. As menstruation progresses, the blood becomes brighter red as the fresh blood from the uterus is expelled. Towards the end of menstruation, the blood may again become rusty or brown in color as the last of the old blood is expelled.

Here is a more detailed explanation of the menstrual cycle:

* The menstrual cycle begins on the first day of menstruation and ends on the day before the next period begins.

* The average menstrual cycle is 28 days, but it can range from 21 to 35 days.

* During the first half of the menstrual cycle, the endometrium grows and thickens in preparation for pregnancy.

* If pregnancy does not occur, the endometrium sheds and is expelled from the body through the vagina. This is menstruation.

* The second half of the menstrual cycle begins after ovulation, which occurs when an egg is released from one of the ovaries.

* If the egg is not fertilized, it will disintegrate and the levels of the hormones progesterone and estrogen will drop. This drop in hormones causes the endometrium to shed and menstruation to begin.