What can be the reason for a shortening of the menstrual cycle?
359002
I have the same problem.  I'm 31 with 2 kids, and my periods have never been right since.  The cycle is shorter and the periods last longer.  Bummer.
255415
I just want to add about effect of stress to menstruation. Stress is causing an unbalanced hormone production, not to mention reproduction hormone, such as FSH & estrogen. So, when becoming unbalanced, the amount of those hormones (either lack or overdose)can effect metabolisme, including period cycle. Some women would have period twice per month, some women would have period once in 2 months, so it depends on each individuals. Reactions could be different.
581765
Menstrual abnormalities can be due to many things including stress, weight gain/loss, thyroid, hormonal imbalance, infection, illness, medications, polyp, cyst, amongst other reasons.  If it continues please see your doctor.
486303
It sounds pretty normal.  Just keep track and if it doesn't get better go to the doctor.\n\nThe normal menstrual cycle in humans\nWomen show considerable variation in the lengths of their menstrual cycles, and the length of the menstrual cycle differs in different animals (see below).\n\nWhile cycle length may vary, 28 days is generally taken as representative of the average ovulatory cycle in women. Convention uses the onset of menstrual bleeding to mark the beginning of the cycle, so the first day of bleeding is called "Cycle Day one".
1150491
Stress is often a key factor when women experience either absence of menstruation or abnormal bleeding. Hormonal imbalances caused by stress may proliferate the symptoms of fibroid tumors and endometriosis, as well as make pregnancy difficult to achieve for couples with fertility problems.
322668
If that is not a normal occurence, keep in mind that stress, going of birth control, sudden weight loss or gain,  or increased physical activity can screw up your cycle in a major way. See what happens next month. If it doesn't straighten out - go to your OBGYN and have a Pap done.
655903
For example, women with very low body fat, such as athletes, may cease to menstruate. The presence of menstruation does not prove that ovulation took place; women who do not ovulate may have menstrual cycles. Those anovulatory cycles tend to take place less regularly and show greater variation in cycle length. In addition, the absence of menstruation also does not prove that ovulation did not take place, because hormone disruptions in non-pregnant women can suppress bleeding on occasion. \n\n\nThere are a few african tribes whose women ovulate...but don't menstruate...reabsorbing the endometrium if conception does not occur during that cycle. The endometrium is reabsorbed into the body instead of breaking down into blood-like products and leaving the body.\n     Sorry I can't give you a site to go to. I grew up in West Africa...where I realized that there was a difference between some of the 'country' girls not swayed by the allure of the western style who never menstruate...and those who had left 'up country' to come to the big cities and started bleeding for the first time, within a couple of years of living the city life.\n    Some vegetarian women stop menstruating all together after first detoxifying their body. Years later menstraution drops off to a trickle, then nothing as the egg is reabsorbed by the body.
1051591
Don't worry about it. It is probably that you have lots of contact with a woman whose cycle is shorter than yours and you are being drawn to her cycle. This is a normal, natural phenomenon. Don't worry.
400668
it is due to an increase in hormone release that happens during periods
764077
It could possibly delay or ever cause your period to come early.  Do not worry - sometimes stress can also lead to a delay.
1070416
Not likely.  The most common causes of missing a period are stress, too much exercise/dieting, and being pregnant.\n\nAre you smoking quite a bit extra because you're stressed out?  Maybe the one thing is obstructing the other.
404087
Some medications, stress, and other things can mess up your cycle. You could be iron deficient and have a low blood count.
251443
Stress, pregnancy, hormonal imbalance, weight gain/loss, polyps, and cysts are some factors that can delay a cycle.
33431
People have been unable to identify a single cause of PMS. Theories range from hormonal and chemical to nutritional and psychological. Women whose mother or sisters have PMS are more likely to have it, so there may be a genetic component. A combination of genetic, physiological, and environmental causes are likely. Making dietary adjustments starting about 14 days before a period may help some women with certain mild menstrual disorders, such as cramping.\nGood luck with that.  I used to have them too.  However my mother told me that they get better afyter you have a baby.  I am not sure about that.  I am pregnant.  Please don't take the advices too closely to heart.  i am not saying get pregnant, every woman is different.  Try drinking chamomile tea. It relaxes the muscles and take a hot bath, as hot as you can stand it, but not for too long or you might pass out.\nGood Luck, we all go through that stuff.
933060
Yes, several factors can cause your period to be delayed, including a strenuous exercise regimen (over-exercise). Other factors related to excercise includes: metabolic, malnutrition, and emotional distress i.e. unhappy love afair, divorce, and so on.\n\nKeep in mind, however, your period does not have to come the same day, same time, every month. A 1 - 5 day variance can be prefectly O.K.\n\nIf you believe that running or exercising may be the cause of the change in you cycle, you should discontinue your exercise(s) and discuss with your doctor a more sutible exercise regimen. You may also visit a local gym a speak with a fitness instructor about a exercise that is right fo you.\n\nHope this answers your question!
356306
It could be menopause.  Menopause is the medical term for the end of a woman's menstrual periods. It is a natural part of aging, and occurs when the ovaries stop making hormones called estrogens. This causes estrogen levels to drop, and leads to the end of monthly menstual periods. This usually happens between the ages of 45 and 60, but it can happen earlier. Menopause can also occur when the ovaries are surgically removed or stop functioning for any other reason
614993
Menstrual abnormalities can be due to many things including stress, pregnancy, weight gain/loss, hormonal imbalance, thyroid, illness, medication, infection, polyp, cyst, amongst other reasons. If you feel there could be a chance that you are pregnant, the best time to test would be two weeks after a missed period, and a blood test done by your doctor is the most accurate way of testing.