I myself have not heard of anyone having an internal to confirm pregnancy. Though it is unlikely, it is actually possible. There is an ultrasound/doppler device designed for internal use. This is sometimes used during the very early weeks of pregnancy.
My GP had some difficulty dating the start of my pregnancy as my periods were irregular so I couldn't say for sure when I'd last had one. He referred me to the hospital for an ultrasound dating scan. The regular ultrasound scan wasn't clear enough so an internal device was used to get a clearer picture of the baby, which was then dated be at seven weeks gestation and therefore we were able to work out the due date. However, the fact that I was pregnant was never in question.
Pregancy diagnostic kits used by the health profession these days are pretty accurate using a urine sample. A GP would use urinalysis as their first port of call to confirm pregnancy. If there was any uncertainty the test would be repeated. When a woman is pregnant she produces a hormone called HCG (human chorionic gonadatrophin). Nowadays even home tests are sensitive enough to detect this in the urine, some within three days of a missed period. So it sounds unlikely to me that an internal exam would be done to confirm a pregnancy but, I suppose it is a possibility under certain circumstances.
If this person had an internal ultrasound then she would know how many weeks gone she is and have a due date. She may well have had an internal examination but I am fairly sure a manual examination wouldn't be done to conclusively confirm pregnancy in the earliest weeks when urinalysis is far more accurate.