There is no such thing as the best form of contraception for unmarried women, and condoms and oral short-acting contraceptives can be chosen according to individual circumstances. Generally speaking, unmarried women without children are recommended to use condoms as a male contraceptive device, as a barrier to prevent sperm from entering the vagina to achieve the purpose of contraception, safe and reliable, almost no side effects, but also to prevent sexually transmitted diseases. Unmarried women can also choose the compound short-acting contraceptive pill contraception, the main effect is to inhibit ovulation, the correct use of contraception rate is high, but there may be some side effects, it is recommended to consult a doctor after use. Unmarried women first need to protect themselves to avoid unwanted pregnancy. If an unmarried woman has unprotected sex or does not use a condom correctly during sex, she should take other contraceptive measures to remedy the situation, such as emergency contraceptive pills. Women who experience delayed menstruation for more than 1 week after sex should first suspect the possibility of pregnancy and should go to the hospital for further examination.