Your menstrual cycle could last for 27 days one month and then 25 the next. The length the last cycle day before you started bleeding again. For the first few years after menstruation begins long cycles are common.
The length the last cycle day before you started bleeding again. If your period started on the 1st for example and your next period began on the 30th your cycle would be from the 1st to the 29th and. As part of the menstrual cycle the lining of the uterus thickens and an egg which is required for pregnancy to occur is produced. Lets start by looking at the textbook cycle which is 28 days long. The average menstrual cycle is about 28 days. The first day of your period is the first day in your cycle and the last day before your next period begins is the last day in your cycle.
The rise and fall of levels of hormones and ovulation during the month control the menstrual cycle.
The menstrual cycle lasts from the first day of a persons period to the day before the next period arrives. Keep in mind that you need to consult with your doctor if your period lasts longer then 7 consecutive days. To calculate the length of your menstrual cycle keep track of your period using a calendar or an app like Clue Glow or Period Tracker. It is important to note that your menstrual cycle length may not be the same every month. To an extent it is normal for someones cycle length to vary from month to month. Ovulation occurs on day.