 [ Symptoms ] how accurate are blood pregnancy tests  had the test done oct 1st and it showed negative my period followed quickly the next day since their were 5 weeks in october my next period began october 31st my hpt now showed positive on dec 1st is it possible to be further along than what i really am now [ Disease ] sure anything is possible tests are not 100 accurate but they are pretty darn good if you are pregnant your ob will be able to more accurately determine how far you are along as the pregnancy progresses