Why after having a pelvic ultrasound did I need to have transvaginal immediately?

It is not standard practice to undergo a transvaginal ultrasound immediately after a pelvic ultrasound. Typically, transvaginal ultrasounds are utilized if a pelvic ultrasound suggests an abnormality requiring further evaluation or provides insufficient diagnostic information due to a full bladder or anatomical limitations. The physician's recommendation to proceed with this type of ultrasound during the same visit should consider your privacy and consent. If you have specific concerns or questions about your medical care, I recommend getting in touch with the healthcare professional involved.