SO MY PERIOD WAS A COUPLE DAYS LATE WHICH WAS ODD BUT DURING THAT MONTH I MISSED MY BIRTH CONTROL A COUPLE OF TIMES AND HAD TO DOUBLE UP A FEW TIMES, WHEN I GOT MY PERIOD ABOUT TWO DAYS LATE IT WAS **VERY** LIGHT IF I WANTED TO I COULD HAVE WORN THE SAME TAMPON FOR ABOUT 2 DAYS! (WHICH I DIDNT DO) BUT IT WAS ONLY ABOUT 4 DAYS LONG AND USUALY ITS 5-6 DAYS LONG AND PRETTY HEAVY ...IM UNSURE OF WHAT THIS COUOD MEAN BECAUSE I HAVE NO CHILDREN! IF YOU HAVE ANY IDEA PLEASE LET ME KNOW! I DID TAKE A TEST LIKE 5 DAYS BEFORE MY PERIOD WAS SUPPOSE TO START USING ONE OF THOSE FIRST RESPONSE SO YOU COULD KNOW BEFORE YOU MISSED YOUR PERIOD AND IT WAS NEGATIVE!