Fertile days after Period

This thing helps us to plan your pregnancy and also helps in acts of a natural contraception method if you want to use. Usually what you have heard that around 14 th day of your cycle your egg is released and that time you are ovulating and it is called as fertile period. But all women does not have a 28 days cycle, for a women with 28 days cycle this fertile period comes on 14th day, Some may have 30 day period and some may have 35 day period, So how to calculate your fertile period? (Watch full video for excessive information)