I have been regularly taking contraceptive pill (Saheli) for last six years and have never been conceived. However, now I missed out my period for 15 days. Thereafter i got a pregnancy test done on the 7th day of same in which i found it was negative. For more surety, i repeated the test again and found i am positive. Hence, may i ask you, even after taking pills regularly on time, How it can be possible for being conceived? Can the pregnancy test by kit be wrong?