All of my life, I have had skin problems where I cringed in terror at the thought of being touched and examined, and have learned to "give my body away" when that sort of thing needed to be done. It is not my body, but a clinical object for the doctor, it is not the "me" that has emotions and feelings, I can feel the nerve sensations, but they belong to part of a body that does not reflect my spirit, and not what could be an invasion of my other senses. Allow yourself to "give away" what you are uncomfortable with, in fact, say it, maybe aloud, and believe you have done so.
I have had two exams by a gynecologist, the first time I was in enough pain and discomfort from a post op infection that it was "any port in a storm" as far as how to get over it. The infection was making my dilating pretty terrible, but I could barely feel the speculum being inserted, and the fact I was draped, just put me in "another world". The second exam was a follow-up to check on my healing, and I simply felt so much better by then that it was as if I had been doing this all my life.