A urine test can be done at more than 30 days of early pregnancy. If a woman has regular periods, she can test with morning urine whenever she has a delayed period, and a positive test with two red lines indicates pregnancy. To determine pregnancy, an ultrasound test is needed to draw blood and take a urine test to find out if there is an early pregnancy. If you have a long menstrual cycle, you can take a blood or urine test or ultrasound to check for pregnancy about a week after your period. Also during the preparation period, it is recommended to take oral folic acid tablets to prevent fetal neural tube abnormalities.