During pregnancy, the menstrual cycle stops. How long does a menstrual cycle last, can be better understood once you will find out if you have a normal cycle or not. If you get your menses started on the first of last month then you should get it on first of this month or two days before or after it. This is considered as a normal menstrual cycle.
http://www.howlongdoes.com/health/how-long-does-a-menstrual-cycle-last/
This first half of the cycle can differ greatly for each woman lasting anywhere from 7 days until 40 days. The second half of the cycle is called the luteal phase and is from the day of ovulation until the next period begins.
http://americanpregnancy.org/getting-pregnant/understanding-ovulation/
A normal ovulation cycle lasts for about 24 hours each month. Once an egg is released from an ovary, it will die or dissolve within 12 to 24 hours if it’s not fertilized. If fertilization doesn’t occur, the egg and your uterine lining will shed. This results in menstrual bleeding about two weeks later.
http://www.healthline.com/health/pregnancy/how-long-does-ovulation-last
Men's health. Women's health. The length of the menstrual cycle varies from woman to woman, but the average is to have periods every 28 days. Regular cycles that are longer or shorter than this, from 24 to 35 days, are normal.
http://www.nhs.uk/Livewell/menstrualcycle/Pages/Whatisthemenstrualcycle.aspx
On average, a woman’s cycle normally is between 28-32 days, but some women may have much shorter or much longer cycles. Ovulation can be calculated by starting with the first day of the last menstrual period (LMP) or by calculating 12-16 days from the next expected period. Most women ovulate anywhere between Day 11 – Day 21 of their cycle, counting from the first day of the LMP.
http://americanpregnancy.org/getting-pregnant/understanding-ovulation/
Menstrual cycle occurs after a month; it occurs in between twenty one to thirty five days. Increasing or decrease in weight is also a result of irregularity in menstrual cycle. When woman, who are not willing to have a baby, do sexual intercourse and take birth prevention pills suffer irregularities in menstrual cycle.
http://www.howlongdoes.com/health/how-long-does-a-menstrual-cycle-last/
The menstrual cycle is measured from the first day of menstrual bleeding, Day 1, up to Day 1 of your next menstrual bleeding. Although 28 days is the average cycle length, it is normal to have a cycle that is shorter or longer. A teen's cycles may be long (up to 45 days), growing shorter over several years. Between ages 25 and 35, most women's cycles are regular, generally lasting 21 to 35 days.
http://www.webmd.com/women/tc/normal-menstrual-cycle-normal-menstrual-cycle
The typical length for the menstrual portion of the cycle is 3-5 days. This is the portion of the 28 day cycle in which bleeding occurs. Thus, 2 weeks is a bit long for someone to be on their period. There can be several reasons for this. If this was a one time thing, then the cause will probably never be found.
https://www.zocdoc.com/answers/7527/how-long-is-a-womans-menstrual-cycle
On Day 1 of your cycle, the thickened lining (endometrium) of the uterus begins to shed. You know this as menstrual bleeding from the vagina. A normal menstrual period can last 4 to 6 days. Most of your menstrual blood loss happens during the first 3 days.
http://www.webmd.com/women/tc/normal-menstrual-cycle-normal-menstrual-cycle
The first day of your menses – or period – is day 1 of your cycle and the start of the follicular phase. During this phase, follicle stimulating hormone (FSH), a female sex hormone, is released from the brain to stimulate the development of a single dominant follicle which contains one egg.
https://www.shadygrovefertility.com/blog/fertility-health/what-does-your-menstrual-cycle-say-about-your-fertility/
how long does a woman's cycle last
A woman's cycle lasts 3 to 5 days. A woman's cycle last for 3 to 5 days.