Perhaps this anxiety will subside as I put more years between myself and 2015, and see that my life is still good and learn to enjoy it without needing something to stress over.
That was absolutely my experience. Even tho I was sober and completely abstinent, I could 'still panic over a stomach-ache, imagining my liver was a scarred mess from the abuse I put it through'.
It didn't stay that way tho
I think I got better mentally for two reasons - I was no longer contributing to the problem and every week that went by I wasn't dead, in fact I felt a little better...
and secondly...around 3 months in, I began to realise how much even little amounts of alcohol could affect me and my world view, and the way I thought about my myself.
I appreciate that you're not committing to abstinence - but I really genuinely feel that last point may be something to consider if this panic turns out to be an on-going problem.
D