If you have sex on ovulation day, there is a higher chance of getting pregnant. Ovulation is the time when a mature egg is released from the ovary and is available to be fertilized by sperm. Sperm can live inside the female reproductive tract for up to 5 days, so having sex on ovulation day or a few days before can increase the likelihood of conception. It is important to note that ovulation can vary from woman to woman and cycle to cycle, so tracking your menstrual cycle and using other methods of contraception if you are not trying to conceive is recommended.