In most cases, a transvaginal ultrasound performed at 19-20 weeks of pregnancy should be able to detect signs of pregnancy, especially if the healthcare provider is conducting a thorough examination of the uterus and ovaries. However, it is essential to understand that the primary purpose of a transvaginal ultrasound at this stage is typically to perform a detailed anatomy scan of the developing fetus to assess its growth and detect any potential abnormalities.
During the anatomy scan, the healthcare provider will examine various structures and organs of the fetus, such as the brain, heart, spine, limbs, and internal organs. While doing so, they will also typically check the uterus and cervix to confirm the pregnancy's location and monitor the overall health of the uterus and ovaries.
If you are concerned about a possible missed pregnancy, it's essential to communicate openly with your healthcare provider. They can address your concerns and provide explanations for any findings or limitations of the ultrasound examination. If there are any doubts about the accuracy of the ultrasound or if the pregnancy status is in question, your doctor may recommend additional tests or further evaluations to confirm or rule out pregnancy definitively.