The debate on whether or not a woman can get pregnant during her period has been going on for decades now. Just like every woman is different, so are her hormonal balances and hence her menstrual cycle. Though there are generalities on which some ground basics of menstruation and pregnancy can be formed, but eventually it all boils down to individual physiology. So, yes, you can get pregnant during your periods.
(There is more information at the link, that's just the first paragraph from the site.)
at 10:52 AM on Mar. 21, 2010