Correct way of checking for spina bifida

So a few months back I had questioned my doctor about my spin sticking out regularly more then anyone else I know. As well as I received shooting pain from the parts on my spine the sticks out the most. The pain comes mainly while sitting in car about 20mins into being in the car. And hard seats with hard backs, most of the time my back again hard things always creates a bad pain. So I brought it up to my doctor and I was wanting to know the ways of knowing if an adult has spineobifea. Let me add I have ask two others (nurse,docotor) they had me bend and they felt down both side of my spine and told me I did not. The pain then continued so I felt to asking my main doctor and he did the same, had me bend over and felt down both side of spine then informed me I did have it. That my spine created an s formation then straight. Then proceeded to say he needed to check another way as well. (I'm going to add the entire time it was only me(female) and my doctor(male) in room. So he had me come to the patent bed and ask me to bend over and pull down my pants n panties n informed me it was another way of checking. Then he put gloves on and stuck one finger in my vagina and one finger in my butt at once felt around and then 2 mins after removed them and then reinforced his statement of me having spineobifea. Then stated we will discuss it more at future visit. I want to know if this is a correct why of checking. Also would like to know if legally he is about to do that with only me and himself in room with door shut and the office being close by the time I had left the building. He had me there 2hrs past his office closing. I'm going too add that he runs his own practice and it partans a respitionist and a biling assistant but other then that just himself. Please help me know what is correct and incorrect and if theres anything that should be done. I felt it was weird and no one else knows what to tell me about how diagnosis things.