Safe Period And Pregnancy

The release of an egg by an ovary — usually occurs about 14 days before a woman's period begins. That's why it can be difficult to predict. It may occur on day 14 of a regular 28-day menstrual cycle, but most women do not consistently have 28-day cycles. (Day one of the menstrual cycle is the first day of bleeding.) Also, women who have regular menstrual cycles may not always ovulate on the same day each month.

The following is the best & safe method to avoid pregnancy:-
First, one should know the duration of the cycle, i.e. first day of the last menstrual bleeding to the first day of the present menstrual bleeding. This is the duration of the menstrual cycle.
This duration varies from person to person & is usually between 26 to 31 days.
Ovulation approximately occurs in the middle of the cycle, i.e. duration of the cycle - (minus) 14 days (this also varies).
A week before and a week after the approximate day of ovulation is considered to be Fertile period.
The days apart from this is called the safe periods, where the fertilization does not takes place.
So, to calculate the safe period you must know the fertile period.
Calculation of fertile period: The shortest cycle minus 18 days=1st day of fertile period. The longest cycle minus 10 days= last day of fertile period.
Ex: if a women's menstrual cycle varies from 26days to 31days cycle, The shortest cycle [26days] minus18days=8th day. The longest cycle [31days] minus 10days=21st day.
Thus, 8th to 21st day of each cycle counting from first day of menstrual period is considered as fertile period.
Period other than this fertile period in a menstrual cycle is considered as SAFE PERIOD.
If one wants to avoid pregnancy avoid intercourse during fertile period. Safe period is safe for segxwal activity