The cost of an ultrasound test for pregnancy is around$100. There are two types of ultrasound: the first, transabdominal ultrasound, which is usually the most exposed, requires a full bladder to be observed, which means that the test is performed while holding urine. The second, transvaginal ultrasound. As the name suggests, an ultrasound probe is placed into the vagina to observe the pelvic organs. It does not require a full bladder state and is performed after urination. Both types of ultrasound have their advantages and disadvantages. Transabdominal ultrasound is easy to undergo, but requires holding urine and waiting time. Transvaginal ultrasound is simpler and does not require holding urine, but requires an invasive examination.