Should I stop taking the pill?

Aug 18th I got home from a month and a half trip from Mexico and the time zones were really crazy on the plane so I'm not sure of I took the pill at the right time. Hours after I got home, me and my boyfriend had insane unprotected sex. I assumed the pill would work out and we were too horny to grab a condom. Recently I've been feeling quite tired, exactly how i felt before I found put i was pregnant with my first. Should I stop taking the pill just in case if I'm pregnant or should I keep taking it until I get pregnancy tests? If I'm pregnant I don't want the pill to affect my baby if i kept taking it so I'm curious. This feeling might be because my period is coming soon but I have no idea. Any suggestions??