I can sympathize with being a bit of a hypochondriac and anxiety prone. For years, I've expected my drinking to rear its ugly head any second and cause my liver to explode plunging me into mind-bending agony. Any vague medical symptom would make me want to call my doctor's office. All of those so-called "emergencies" turned out to be nothing or nothing alcohol related.
I also used to suffer from anxiety attacks and actually had a single panic attack. Doc put me on meds. I didn't like them so I weaned myself off, and managed to find my own ways of dealing with anxiety (reading the Bible is one of them).
Finally, this past week the medical problem was real when my bile ducts decided to take a vacation. They're starting to come back online, so to speak, but it was enough of a wake up call to get my attention. Third night sober coming up.
Never had the experiences you've described, though. I've gotten a lot of advice about how dangerous it is to go cold turkey and not be under medical care, but so far, so good. That said, my previous attempts at weaning myself just resulted in my doing more drinking. At least for me, it's got to be all or nothing, though I can't say weaning might not work for someone else.