thank you for using health care magic,
well for being pregnant mating of sperm and ovum is necessary.. in your situation its difficult to get pregnant.. but minor chances are always there..
i will suggest you to wait for your periods..if you do not get your periods then after a week go for urine pregnancy
test.. but it can be false negative in early stage so consult gynecologist and go for more confirmatory test like beta hcg
level or ultra sound
in future you can use condom or pills for safe sex
hope this helps you..