"Using two condoms at the same time-either two male condoms or a male and female condom- is not a good idea as the friction may result in one or both of the condoms tearing. If you want to take extra precautions against pregnancy when having sex, and are concerned about the possibility of a condom breaking it is better to use another form of contraception. For example, using a contraceptive pill, patch, vaginal ring or IUS as well as a condom will ensure that you both have double protection against pregnancy as well as protection against STIs."
"Let's say you had sex with someone who is HIV infected and the condom broke, or you found out only after unprotected sex that your partner had HIV. Can you reduce your risk of getting HIV from sex--or from a needlestick--by taking medications afterward? Yes. This is called postexposure prophylaxis, or PEP. The medications that are given are the same types that are used to treat HIV (antiretrovirals, or ARVs), and they usually are given as a combination of 3 medicines for 1 month. To work best, these ARVs should be taken as soon as possible after the exposure, and…"