As you start the baby-making journey, youll definitely want to know how soon can a pregnancy test detect pregnancy? It varies by test, but in short, the soonest a home pregnancy test can read positive is about four days before your first missed period, or about three and a half weeks after an egg is fertilized.

Are you 4 weeks pregnant when you get a positive test?

By the time youre 4 weeks pregnant, you can usually get a clear positive on a urine pregnancy test. Its a funny thing, but your egg may have only been fertilized in the last two weeks. Still, the dating for pregnancy begins with the start of your last menstrual period.

Do you test positive sooner with twins?

You cannot conclusively distinguish a single pregnancy from twins on a urine pregnancy test. That said, you may have a very early positive pregnancy test if you are carrying twins.