It is possible to get pregnant if the condom slips inside the vagina, especially if the woman happens to be ovulating. If this happens, it is recommended to take oral emergency contraceptive pills within 72 hours in time to remedy the situation. When having sex, if you use a condom for contraception, you should first have a condom check to prevent the condom from breaking and causing an unwanted pregnancy, and be especially careful about the possibility of the condom slipping inside the vagina and causing a contraceptive failure resulting in an unwanted pregnancy. Condoms are troublesome and not absolutely safe. Women can also use other methods of contraception, such as oral short-acting contraceptive pills or intrauterine devices.