Is it normal for me not to like giving or receiving oral?

I was in the first relationship in about two years recently and everything was great except the sex. As I think about it now - I am disgusted. Our first sexual experience was pretty normal - lots of making out and eventual protected intercourse. From then on - it got weird (to me). On our second sexual encounter, she brought out a vibrator and used it to orgasm while I was inside her staying still for her pleasure. This was not comfortable for me, but, I figured if that was what she needed then it was not that big of a deal to stop and let her orgasm before I finished. Then she wanted to pleasure me orally...

I have never been very fond of oral sex - giving or receiving. To me, it is just an unnatural feeling not being able to look each other in the eyes and share the experience. I told her that I did not enjoy oral - but, she insisted that she wanted to and it was important to her. I still cringe at the teeth scraping which caused pain and injury. I shared with her that the scraping of the teeth made it very uncomfortable. She said she would be more gentle - even after I re-iterated that I did not enjoy oral sex.

For her pleasure, I tried to oral her - but, I felt very uncomfortable. She seemed to enjoy the experience, but, I did not feel close to her for the rest of the evening. Awkward...

We have since parted ways, but, I am stuck with a sexual experience that I have not been able get over which has actually made me very concerned about attempting another relationship. It seems that "our" sex was all just about "her" and I hope that not all women are now like that. (I had been in a long term relationship for almost two decades previously).

So, is it normal to not enjoy oral sex?