Hi! MY LAST PERIOD ENDED ON DEC 15th. I HAD UNPROTECTED SEX ON THE 12th DAY OF MY NEW CYCLE (DEC 26th) AND HE DID EJACULATE INSIDE OF ME. I TOOK PLAN B WITHIN 42 HOURS. NOW A WEEK AFTER I HAD A VERY LIGHT PERIOD LIKE SPOTTING FOR 2 DAYS AND IT IS GONE. MY PERIOD IS A FEW DAYS LATE. I TOOK A FIRST RESPONSE TEST THAT CAME OUT POSITIVE BUT THE NEXT DAY I DID 6 OTHER TESTS FROM CLEARBLUE AND OTHER BRANDS AND IT SHOWED NEGATIVE. IS THE POSITIVE TEST WRONG AND THE 6 NEGATIVES RIGHT OR IS IT POSSIBLE THAT I AM PREGNANT? IT IS ONLY A WEEK AFTER. IS IT TOO EARLY TO KNOW? CAN A FALSE POSITIVE HAPPEN?