Yes dear, sometimes it is happened that the pregnancy test shows negative signs, even it is positive and periods seems regularly, but irregular. So but is very exceptional cases. https://lovematters.in/hi/resource/unplanned-pregnancy https://lovematters.in/hi/pregnancy/home-pregnancy-tests-dos-and-donts If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask” https://lovematters.in/en/forum