Post-Ovulation Method

The post-ovulation method is considered the most effective of the fertility awareness methods, particularly among users who chose to abstain from sexual intercourse entirely from the onset of menstruation through the end of the fertile period. The first year failure rate for the post-ovulation method is 1% with perfect use. This rate can vary and depends entirely on the user's willingness to abstain from sexual intercourse for more than half of the month or to be vigilant in the use of barrier methods during the menstruation through post-ovulation phase.