There are many ways to prevent yourself from getting pregnant, including tubal ligation, intrauterine device (IUD) or oral short-acting contraceptive pill, or oral emergency contraceptive pill, etc. You can also take the method of safe period contraception. If a woman has a regular menstrual cycle, ovulation is usually about 14 days before her next period, which is the physiological danger period around the time of ovulation. However, the safe period is not absolutely safe, there may be extra ovulation, and there is still a possibility of accidental pregnancy. If you are not planning to get pregnant, you should try to choose a more effective and reliable method of contraception.