my boyfriend n i had sex with a spermicidal condom and after that we rested for like 20 min. n then he put it back in with no condom for less than 1 min. he didnt come or anything.but i wanted to know if theres a high risk of pregnancy.i also have a very irregular period ..i was supposed to get it today but i didnt,therefore im worried...my period has never been like clockwork so i dont really know what to think.ANY HELP?