Blood pregnancy tests can tell you if you're pregnant 6 to 14 days after conception. You'll need to wait longer before taking a urine test.

A late period can be caused by exercise, low or high body weight, or pregnancy. If you're not pregnant and your period isn't coming, see a doctor.

Many believe pregnancy cannot occur during a period, but the truth is more complex. This article examines how conception can occur during menstruation, the factors that increase the likelihood of ...