Identify your fertile days and get pregnant are associated. Knowing our menstrual cycle is the best way to achieve a baby or, in the opposite case, avoid pregnancy. You can only conceive on the fertile days of your menstrual cycle, which translates into before and during ovulation. The menstrual cycle in many women is regular, while in others it is irregular. Even so, it is made up of some phases or stages from which it is possible to specify which are your fertile days and get pregnant.