Women did not put the IUD, the contraceptive measures taken: 1, you can use a penis condom to take contraceptive measures, before sex, wash the vulva after the male with a penis condom to contraceptive; 2, you can also use the vaginal diaphragm, in the sex will be killed in the woman’s vagina, or to block sperm through the cervix, to play the role of contraception; 3, you can oral short-acting contraceptive pills, emergency contraceptive pills, or using the safe period contraceptive measures. The failure rate of these methods of contraception is higher, and they are also prone to higher side effects, and are not routinely used; 4. If a woman is using long-term contraception and is unable to place an intrauterine device, she can use subcutaneous implantation or tubal ligation to contracept. Any contraception is not 100%, and a urine pregnancy test or ultrasound is needed after the menstrual period is postponed to confirm whether an unwanted pregnancy has occurred.