Natural Family Planning

  • Natural family planning can be used as one of many birth control methods since it permits you to calculate conception dates.
  • It helps identify the phases of a woman's menstrual cycle; when she is most fertile, as well as those phases when she is less fertile, and therefore, less likely to become pregnant.
  • If a woman's cycle is irregular, then birth control will be less reliable since it is more difficult to predict when ovulation is likely to occur.
  • A woman usually ovulates 14 days before her next period. For example, if a woman has a regular 26-day menstrual cycle, counting the first day of her period as day one, then she will usually ovulate on day 12.
  • The female egg released into the fallopian tubes has only 24 hours to be fertilized by the male sperm.
  • However, the male sperm can survive for up to seven days in the female cavity.

Fill the details below and press 'Natural Family Planning Details'.

Fill in the details below
First Day Of Last Period==>                        Year
Shortest time between period in last 6 months==>
Longest time between period in last 6 months==>
Plan ahead   periods



 If you want to use this Family Planning calculator on your web site, click HERE to get the code. Please don't forget to link back to us.


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