Me or him?

Had casual sex with a guy I've been seeing for a while. There were about three rounds and he started without the condom but put it on eventually during each round. After he left I went to go pee and when I wiped there was a whole lot of white liquid coming out, super stringy/sticky I'm pretty sure he didn't cum inside me but could one of the condoms have ripped? Just wondering if I should take plan b. Or is it me?
 Also my cycle ended the day before this encounter so do I even have an egg at this point to be fertilized?
Help!