Must admit I was not looking forward to it. You can request a male doctor (they asked me) if it helps. It is in no way painful and I didn't find it nearly as embarrassing as my imagination had made it.
It is a very modern sounding test, but you are right the digit in question is the doctors middle finger. The first time the doctor looked as if she had been at uni with my daughter, the second doctor she looked like she was on day release from primary school, but I can assure you all there is...
I have just been given the all clear after prostate cancer. I didn't have any symptoms and it had already broken out of my prostate. I was 57 at the time. Don't wait for symptoms take any opportunity to be tested.