Does your body detox with nasty symptoms when you stop moderately drinking?

I’m a 28 year old woman and I’ve been drinking 6 to 8 pints a week the last two years. I’ve stopped now and had one little bottle of beer over the last week and a half.

I feel like total shit right now and don’t know why. My friend said maybe my body was detoxifying but I thought that was more of an alcoholic/super heavy drinker thing. Does anyone have any experience of this and if so how long did it take to get better? I wanna keep my streak and am considering going teetotal for a few months to see what happens