There are no special tests that must be done when you are 8 weeks pregnant.1. If it is the first pregnancy checkup, you can do an ultrasound examination to see if the size of the gestational sac in the uterine cavity matches the gestational week, and if there is a developing fetal bud and heart tube pulsation in the gestational sac.2. Establish a maternal health record, and the maternal health doctor may recommend the pregnant woman to do routine laboratory tests such as routine blood, routine urine, hepatitis B three system, blood sugar, liver and kidney function.3. 3.After the ultrasound examination has been done and the embryo development is normal, there is usually no need to deliberately go for pregnancy checkups at 8 weeks of pregnancy. It is completely possible to wait until about 11-12 weeks of pregnancy, when not only some routine laboratory tests can be done, but also NT tests can be performed.