text: The time it takes to get pregnant varies for everyone.  However, if you are young and have not achieved pregnancy in a year and a half, see your ob/gyn for an infertility work up.  Some doctors will see you after a year but some are fairly rigid about the 18 months...especially if you are under 30 years of age.\n\nIt is not common to have a period when you are pregnant but it has been known to happen.