The menstrual cycle is the period from one menstruation to another. The first day of bleeding is considered the first day of the cycle. The last day before your next period is the last day of this menstrual cycle.
Normal duration of menstrual cycle varies from 21 to 35 days. Ideal is a 28-day cycle. Although it is found in 15% of women.
Periods last from 3 to 7 days, and blood loss ranged from 50 to 75ml.
Monthly begin ages 9 to 15 years. Age varies depending on race, physiological factors, diet, intensity of exercise and genetics. The period between the beginning of breast development and first menses is about two years.
Every menstrual cycle is characterized by two reproductive processes. The first is the maturation and release of the egg from the ovary and the second is to prepare the uterus for implantation of a fertilized egg. The first time (a year and a half) of the menstrual cycles can be irregular. This time formed by a reproductive system.
To determine the date of next menstruation, it is important to determine the length of your menstrual cycle. For this fit the calendar. If for several months you will note the dates of first and last day of the cycle, then you will know your cycle length and can calculate the day of the beginning of the next month.
Sometimes menstrual irregularities. They are expressed in the change of cycle length, duration of menstruation or change in the amount of blood loss. If the duration of your cycle is less than 21 days or more than 35 days, it is a reason to go to the doctor. If my period started to last for less than 2 or more than 7 days, you need to consult a gynecologist. Scanty or heavy blood selection must also be the reason for visiting the doctor.