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.
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?