Typically your cycle will last 28 to 33 days. Ovulation begins mid cycle on day 14 but this can occurr earlier or later if you have a harmonal imbalance. This is due to your natural cycle.
But intercourse and the moons phase can also cause ovulation. This is called Lunar ovulation. It is calculated by your birthdate and chances of ovulation during this period is increased by having intercourse during this period.
