Hello, for a pelvic ultrasound do the ultrasonographers insert a transducer probe into your vagina? even if you have never had sex?

Not necessarily: Pelvic ultrasound can be done via a trans abdominal probe, this typically requires a full bladder for the study. An endovaginal ultrasound is done via a probe inserted in the vaginal, sometimes this may be possible even if the patient has never had sex, however, it may be uncomfortable. Endovaginal studies typically offer better information depending on the clinical situation.