One of my best friends Dad was a heavy drinker, for years he had lower back pain and I'm pretty sure numbness in one leg. After many years of discomfort it was discovered he had neuropathy. They suggested the booze was the root issue, he quit and it more or less solved the problem.
Glad your working with a Dr, whatever you have going on deserves medical attn. Also glad your on here and focused staying sober.