What do you do if a condom breaks? Stop immediately, withdraw, remove the broken condom, and put on a new one.
Condoms can break, slip, or leak if they’re not put on and taken off properly. If the condom breaks, emergency contraception can be used to prevent pregnancy. Emergency contraception can be started 5 days after unprotected sex, but the sooner it’s started the better.
And don’t forget: Emergency contraception does NOT protect against STDs.