Level 1: Can I take a pregnancy test when I am 7 days pregnant? Can I take a pregnancy test when I am 7 days pregnant? This is a question that many expectant mothers are concerned about. Generally speaking, routine B-ultrasound examination cannot be performed on the 7th day of pregnancy because the embryo has not yet formed at this time. However, pregnancy can be tested with a urine or blood test. Urine test strips can be purchased at pharmacies, while blood tests need to be performed at a hospital.