Is it a possibility I'm pregnant ??????

So recently I've had sex and we didn't use a condom. It was a quickie but in the quickie he came twice the first time he came he wiped the cum but we started back up again but I'm not sure if there was any cum left on his private what do I do ?? We were suppose to get a plan b pill but we never did !!!! How long does it take for you to find out if your pregnant or not ? I've never been in this type of situation before niether of us . Should I just wait it out ?? Also my cycle is suppose to start today & it didn't 😒