Little advice please

So I had unprotected sex with my boyfriend, I know I should trust him but I'm always gonna worry.. we were gonna use a condom ( he forgot it ) but he usually pulls out a little while before to be safe and let's me finish him off with a hand job or blowjob. But is there a way to tell if I'm pregnant ( I can't get ahold of a pregnancy test and there is 6 days until my period ) but I need to know sooner because I'm super worried