Anyone knows about menstrual problem , what does happen in that?

Dunno wot ur asking but heres some info anyway:
A woman's menstrual history begins with her first period (menarche) and continues until menopause. It includes average cycle length, and common associated symptoms, such as menstrual cramps, ovulation pain, premenstrual syndrome (PMS) or premenstrual dysphoric disorder (PMDD).
In the first half of the menstrual cycle, estrogen levels rise, causing the lining of the uterus to grow and thicken. This lining is called the endometrium. The two small, grape-shaped organs inside the abdomen on either side of the uterus, known as the ovaries, are filled with hundreds of thousands of eggs and are the organs that allow pregnancy to occur. When a girl reaches puberty, the ovaries respond to a rise in follicle-stimulating hormone and cause one of the eggs to mature. About half way through the menstrual cycle, a surge of luteinizing hormone takes place, and the egg is released. This mature egg is called an ovum, and its release is called ovulation. When the egg is released it travels through one of the two fallopian tubes and down towards the uterus. If the ovum is fertilized by a sperm at this time, pregnancy occurs. However, if a sperm does not fertilize the egg, the body no longer needs the uterine lining to support the fertilized egg. Estrogen and progesterone levels then drop, triggering the uterine lining to gently fall away from the wall of the uterus, and to be shed through the vagina. The discharge of this lining is the menstrual flow. The entire process is called menstruation.

sorry , dont
ur a guy y do u need 2 no?
there are to maney types of menstrual problems. which one
go ask your girlfriend.
there are so many problems, what problem are you talking about
I might be able to help you if I knew what KIND of menstrual problem you're talking about. Or do you just mean that menstruation itself is a problem? If so, I'll drink to that!