Had sex, condom broke, took the Plan B pill the next day within atleast 12-24 hours, am I safe?

You are probably not going to get pregnant but there is no guarantee that you wont. Sex isnt a game for fun, it has very real consequences. If you absolutely positively cannot be pregnant right now then you probably shouldnt be having sex because even birth control isnt 100%. Plan b is somewhere around 80-95% effective. Regular birth control pills you take every day are around 98-99.9% effective depending on how good you are at taking them every day and on time. A male doesnt have to ejaculate (or cum) to get you pregnant. They release small amounts of sperm all throughout sex, not just when they ejaculate, although the majority are released then, but since it only takes one, pulling out before ejaculation is certainly no form of protection. They cannot feel and cannot control the leakage that occurs during sex, pre-ejaculation, but it can get you pregnant so you were smart to take an emergency contraceptive. I hear of so many broken condoms these days I'm not sure I would want to rely on them because either they are not being made well or people are not putting them on and using them properly. You have to be sure to leave the tip hanging off the penis a bit as a reservoir for the semen. If he pulls the condom on all the way or down too far, it is going to break when he ejaculates. You also have to be sure not to use any oil based lubricants like Vaseline (petroleum jelly) or mineral oil etc. Water based lubricants like KY jelly are okay though. I would strongly urge you to get on some form of regular birth control like the Pill if you are going to be sexually active. You will have much less to worry about that way. The only 100% effective way to not get pregnant is to not have sex!