Condom slipped I think I’m freaking out

Basically my boyfriend and I just had sex. He pulled out before he came but when we saw the condom it was on and had semen in the end however there was some cum on the shaft of his penis where it looked like the cum came out of the opening of the condom. I freaked out and immediately took a plan b idk I use condoms all the time and have never had this happened please help.