If you have regular periods, you can calculate the day of ovulation, according to the day of ovulation in the projection of the time of ovulation, in the time of ovulation reasonable arrangement of sexual life, you can improve the chances of conception. If menstrual irregularities, it is clinically difficult to calculate the time of ovulation, it is also difficult to project the ovulation period, it is recommended that it is best to monitor ovulation through ultrasound, when the follicle reaches the advantage and then instructed to cohabitate, will also improve the chances of pregnancy. Therefore, if you want to get pregnant clinically, you need to know your ovulation date, and intercourse during ovulation can improve the chances of pregnancy. In addition, through the basal body temperature monitoring, will also guide the clinical cohabitation, for example, in the middle of menstruation basal body temperature falls to the lowest time, often is the day of ovulation, after the day of ovulation basal body temperature will appear to rise state, usually in 36 degrees 8 above, the vast majority of the 37 degrees or so, in the body temperature drop day cohabitation, the chances of clinically get pregnant will also be increased.