I spent a few days psyching myself up. I got through it on sheer bravado. Did the same thing for a mammogram.
I kept telling myself that while I hated those monstrosities on my chest, some men are almost as big (and some men get mammograms). It sorta helped. And I told myself that if I wanted them GONE, then I had to go through this. That mantra helped more.
I am not as graceful about getting through gyno visits. Dysphoria has a way of building up until you can't really control it anymore, and there's something so much worse about the bottom half, for me, at least.
If you are not driving yourself home (or if you can wait around afterward), you might consider seeing if you can get a prescription for a tranquilizer. I have issues with dental work (I'm even tense for cleanings) because of a bad experience I had years ago, so my dentist prescribed some Valium. In retrospect, a whole pill was more than I needed because I don't like to lose control (I was really flying, and my social filters were compromised). I took a half pill for my second round, and that was about right. I might try that before my next Pap smear.