wait 2 weeks from the last sexual encounter and take an hpt. Not using condoms is a VERY foolish thing to do. If you're not pregnant I HIGHLY suggest getting on some form of b/c and ALWAYS using condoms.
If you're having unprotected sex, pregnancy is always possible. It won't matter if he came or not. ALL men have pre-ejaculation with does contain trace sperm amounts, even if they say nothing was there. You need to wait till your next period is due (or at least 2-4 weeks) and take a pregnancy test with first morning urine. If you don't want children, you NEED to always use a condom and birth control. They'll protect against STD's (which anyone could have unless you've seen the test results from a doctor in front of you) and pregnancy.
First of all not using a condom is a stupid idea, there are so many things you can catch if you dont use one, second if he doesnt know if he cummed or not probably means you where not ready to have sex. If your boobs are swollen it could mean your pregnant or it could mean your period is coming, my breasts get tender right before i get my period. What do you mean you cant do the rest room right? i would suggest taking an at home pregnancy test and follow up with your doctor to be sure. and i would get an sti test since you didnt use a condom. hope that helps good luck