Hi. so uhm me and my boyfriend fooled around. i was giving him a handjob then he came on my stomach. we have clothes on by the way. after than we made out a bit more. i also gave him blowjob but he did not come. we started rubbing genitals without barriers... but he did not come this time. we just rubbed. idk if he pre-c or something. my period is irregular so i really dont know when my next period will be. is there a possible chance of pregnancy? im scared :( pls help