someone helppp

the condom broke yesterday & he says he pulled out but it kindof slipped out of me making me think he didn’t pull out quick enough, I went to the toilet after and had a wee but I’m mega mega scared, it’s not something I can tell my mum so that’s not an option, my period is in about 2 weeks so do I wait? As I’m 15 I don’t know about going to the shop to get plan b, or even a pregnancy test ? Need some advice x