Can a ultrasound miss pregnancy if not looking for baby?

It is possible for an ultrasound to miss a pregnancy if the sonographer is not specifically looking for a baby. This is because early pregnancy can look similar to other conditions, such as a cyst or a mass, and it can be difficult to distinguish between them without specifically looking for a pregnancy. Additionally, if the ultrasound is done too early in the pregnancy, the fetus may be too small to be detected.

However, if the sonographer is specifically looking for a pregnancy, it is very unlikely that it will be missed. This is because the sonographer will be able to see the characteristic features of a pregnancy, such as the gestational sac, the embryo, and the fetal pole.

In general, it is important to let your doctor or sonographer know if you are pregnant or think you might be pregnant so that they can take appropriate precautions.