First day of lmp was feb 28 have 28 day cycles when do i ovulate when's the earliest i can take a pregnant test?

35 days after period: I usually tell my patients trying to conceive that they should take a pregnancy test 35 days after the first day of their last period (so this would be a week after your period should have started). Most pregnancy tests claim that they can be performed right at the time, or a few days beyond, a missed period. But, to avoid confusion, i tell my patients to wait a full week beyond.