You cannot take a pregnancy test while you are having your periods. This is because; it might give you false results. A pregnancy test becomes positive only after the fertilised egg has first been implanted into the uterus.
- How accurate is a pregnancy test while on your period? – http://wiki.answers.com/Q/How_accurate_is_a_pregnancy_test_while_on_your_period
- Why can’t you take a pregnancy test while on your period? – http://wiki.answers.com/Q/Why_can’t_you_take_a_pregnancy_test_while_on_your_period
- when should you test for pregnancy with an irregular period? – http://www.ehow.com/about_4597525_should-test-pregnancy-irregular-period.html
- What could be wrong if you started your period a week early while on birth control and a pregnancy test was negative? – http://wiki.answers.com/Q/What_could_be_wrong_if_you_started_your_period_a_week_early_while_on_birth_control_and_a_pregnancy_test_was_negative