Ovulation normally happens about 10–16 days before menstruation begins. Lots of people can identify their peak fertility periods by monitoring their cycles. That is known as the ovulation calendar approach to predicting fertility.E?er hamilelik dü?ünüyorsan?z, yumurtlama dönemi hesaplama konusunda yard?m almak istiyorsan?z, kad?n hastal?klar?