Hi
I don't necessarily think the doctor is incompetent if she was unable to complete the hysteroscopy. Some doctors will be more experienced or adept than others, so you could ask about their work experience or ask to see the more senior doctor.
The doctor and nurse should keep asking if you want to continue if you find it very uncomfortable, because they can only do it with your consent.
I had my first hysterocopy without anaesthetic or speculum - just the camera probe, which is all that's needed. I was told I would get a dull ache, which I did, but the doctor did not tell me about the sharp, stinging pains. A speculum or local anaesthetic would not have helped because most of the pains were after the camera was already inside. They felt like nerve pains and only lasted a few seconds each, but they brought tears to my eyes! By the time the doctor and nurses noticed, the procedure was nearly finished, and I got over it quickly. I was not being brave, I just knew the procedure would not last much longer.
The second hysteroscopy was with a GA because the polyp would have been too difficult and painful to remove without anaesthetic. I was totally nervous of the anaesthetic, but relieved when it was all over without incident, and the morphine made me feel so good!
I think the idea and anticipation of it is worse than the reality. Not having it done would also cause a lot of worry.
I don't think it's as bad as root canal work, if that helps.
Good luck, and bring someone with you who can help you relax, if you have the opportunity.