HELP!!

So recently me and my boyfriend had sex like we’ve been having sex a lot lately and last night he was wearing a condom and then right after he came he pulled out and looked at the condom and it had broke. So he cummed inside of me then we both started freaking out but i took a plan b but some people say that those don’t alway work and i might be ovulating i just don’t know. Should i be worried or am i going to be fine ?