There is a new type of ulrasound called “trans-vaginal ultrasound”. It is what it sounds. A probe in the vagina. It is better that the kind with the probe on the stomach in that it takes better pictures from a better, closer angle.
http://www.webmd.com/women/pelvic-ultrasound
Ah, I see. Thank you for the information. Seems like it won’t be long before technology takes away even this objection.