HI, I MISSED MY PERIOD , DELAY BY A WEEK, I DID I -CAN PREGANANCY KIT AT HOME, RESULT WAS NEGATIVE, BUT I DIDN'T HAD MY PERIODS AFTER A WEEK, I AM TENSED, IS KIT MISGUIDED ME?I TOOK PERIODS DELAY PILL ONLY FOR A DAY( AS I HAD SOME FUNTION), ANY PROBLEM WITH THAT?