I'm not late I get my period the 14th of April and I'm not ovulating either considering the fact I got my last period the 15th of March I did however had a penis slapped on my vagina and he rubbed it on their too I'm not sure if they may have been pre cum but before he saw me he masterbated and took a piss and hoped in the shower when he was with me he probably was pre cumming at any point did he go inside my vagina and he didn't cum at all , could I be pregnant ? Is it necessary to buy a plan b ?