The best time to have sex when both parties are preparing for pregnancy is during the period of ovulation, which can better enhance the chances of conception. In the case of women with normal menstrual cycles, it is recommended to have sex around the time of ovulation, mainly because the probability of a woman’s egg being discharged and sperm combining is relatively high at this stage, and the chances of getting pregnant are relatively high. Ovulation usually refers to the 14 days before the next physiological cycle, if a woman’s physiological cycle is relatively unstable, or recently affected by external factors, the ovulation period may vary, generally can be detected with the help of ovulation test paper and other aids, you can also go to the hospital for ultrasound monitoring, through the medical means of the body to determine the status of ovulation, to choose the best time to cohabit.