The paradox of my illness is that I look completely healthy, although I am in constant pain and suffer from neverending fatigue.
I don't find going to the doctor's unpleasant for the reasons you described, but rather for the fact that I always feel I have to make myself look sick on the outside, so that it matches the inside, and not risk hearing the soul crushing remark "Oh, but you don't look sick!".
It's actually quite tragic... as in Greek tragedy tragic.
I hear you - I went through the same thing for years "you look fine!" Or "you don't look sick!" And would have to deliberately make myself look like shit before an appointment. Even so, I had huge dark circles under my eyes from exhaustion, sallow looking skin, underweight, etc. Everyone
except doctors said I looked terrible (and should see a doctor, of course). Then they would minimize every symptom, downplay any complaint, compare me to other patients with "real problems worse off" than mine, say it was all in my head... while refusing to order any tests for years.
When I finally got assertive and demanded tests, turned out I had an incurable disease the whole time and they were "so sorry it wasn't caught sooner" among a laundry list of other untreated diagnoses. I scoff-laughed when the doctor broke the news because of exactly what you wrote. I'm sorry you're not taken more seriously, truly.
To answer the OP: I pretty much get blood drawn, injections and such on a monthly basis nowadays so it doesn't scare me anymore. Being inside an MRI machine is pretty scary, that's for sure. Don't have much of a choice to go or not because I'd be much more miserable without the treatments
seems like I live at the doctor's these days.