Calculating when the period is due, menstrual cycle calculator
The menstrual cycle is always counted from the 1st day of menstruation until the 1st day of the next bleeding period, making it the number of days in between menstrual periods. It lasts in average around 28 days, but only as much as 10 to 15% of women experience this perfect length of menstrual cycle. The length depends on each individual woman and ranges from 25 to 36 days. It can be difficult for many women to calculate their menstrual cycle, but there is a solution to this dilemma.
Most of women can find it hard to keep up with ever changing cycle patterns. However, it may be very useful to keep a calendar, as it may ease concerns of when is your next period is due. Remember that the first day of your menstrual period is the first day you see bleeding. Once it happened, mark that date on your personal calendar and consider it the 1st day of your menstrual cycle. Besides, also mark the last day before the next period starts.
Your menstrual cycle is considered the number of days counted from the 1st day of the menstrual period and the last day before the next one. But while you are calculating those days, don’t forget to include the 1st day of your period and the last day before it arrived again. The received number of days can be expected before your next period.
As it was indicated above, every woman is different, and just as much as 15% of them can boast the normal 28-day length of their menstrual cycle. However, if a woman tracks her menstrual cycle for 3 to 4 consecutive terms, it would undoubtedly help her gain her personal menstrual cycle pattern based on her own body’s rhythm. If a woman achieved consistency in the number of days of her cycle, the period should start when expected.
However, there’re many things able to affect your menstrual cycle. Young women, having their first menstrual period, may experience irregular periods for the first 2 years. This period of time is called “menarche”. Usually women receive their first menstrual period at the age from 9 to 15, and they may face either light or skipped periods during this phase. Besides, for the fist two years the length of their cycle can range from 21 to 45 days.
As for women who face menopause, they can also experience inconsistent patterns within their menstrual cycles. The phase called “menopause” starts later in age, leading to a shift in hormonal balance. Menopause changes the way the woman’s body responds her menstrual cycle, making her suffer from heavy bleeding, mid-cycle spotting, or skipped periods.
If you have personal concerns about your menstrual cycle, it is recommended to schedule an appointment with your personal OB/Gyn.




When you come to the gynecologist, he always asks you what your menstrual cycle is. Many patients believe that the menstrual cycle – these are the days when you have a bloody discharge from the genital tract. In fact it’s just a menses. A menstrual cycle – is a time period from one menstrual period to another and it is from the first day of the last menstrual period before the first day of the next (represents normal 23-35 days)
