When the egg is not fertilised, the lining of the womb is shed and a woman gets her period menstrual bleeding. Menstruation typically occurs in 28 day cycles so most women get their period every 28 days.
However, some women have longer cycles and may only get their period every 40 days, while other have shorter menstrual cycles and may get their periods as often as every 21 days. The menstruation calculator determines when your next period is due based on a 28 day menstrual cycle. The information presented here is for general purposes only and should not be used to make diagnosis or treatment decisions. For specific information about your health you should see a health professional.
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Find your practitioner. How to Use a Period Tracker: Simply input the length of your average period and the length of your last period, and let the period calculator do the rest.
Pop in the date your last period began, the length of time it lasted, and the average length of your cycle to get a better idea of when you can reasonably expect your next period.
If you have no idea how long between your periods, make a note the next time it starts and when it ends so you have it on hand for next month. Better late than never amirite? Since ovulation usually occurs on the 14th day of your cycle with Day 1 of your cycle being the first day you bleed , you can also learn and track peak ovulation. If someone ovulates early, their cycle may be shorter. If they ovulate later, the cycle may be longer. How often a person ovulates can change depending on several factors , including:.
People who ovulate earlier in their cycle often have fewer days between periods. Some specific causes for a short cycle include:. The later into their cycle a person ovulates, the later their period will be. A long cycle may mean that a person ovulated very late, or did not ovulate at all. According to the OWH , specific causes for a long menstrual cycle include:.
A person with these symptoms should speak to their doctor. If a person has not had their period, they should also consider whether they might be pregnant. Period tracking can help a person predict their next period.
It can also help a person determine whether their cycle is regular or irregular. There are a few ways a person can track their period, including mobile applications or in a diary or calendar.
Some people also use period tracking to monitor when they might ovulate. However, according to an article in npj Digital Medicine , period tracking alone is not reliable, since the day of ovulation can change month to month.
Additionally, a typical cycle length does not necessarily mean a person ovulated. According to an article in Bioengineering and Translational Medicine , if a person wants to find out when they ovulate, they should also monitor:.
Because an irregular period sometimes means a person is not ovulating, very long or short cycles could be a sign of a hormonal imbalance that may make it difficult to conceive. However, it is not necessarily the case that someone with irregular periods will not get pregnant, or that someone with regular periods will.
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