Will Plan B Have To Be Taken Again Or Not?

I HAVE A BIG QUESTION I HAD UNPROTECTED SEX ON SUNDAY AND TOOK PLAN B ON TUESDAY BUT THEN AGAIN YESTERDAY THE CONDOM BUSTED . MY QUESTION IS DO I TAKE PLAN B AGAING OR DOES THE SAME PILL I TOOK TAKES EFFECT ON THE ACCIDENT THAT OCCURED YESTERDAY ... THE SYPMTOMS I HAD AFTER SEX WERE REALLY WEIRD I WAS CRAMPING REALLY BAD STILL TO THIS MORNING