Welcome, Jean!
Try to remember alcoholism is a disease, not a character defect. And, you can learn to live a sober life.
I also down-played how much I drank and tried to not pay attention to that. And, personally, I think waiting 18 days till your husband comes home is just putting off the decision. I always had a reason to wait, but I don't think there is ever a perfect time to stop drinking.
And, you will always find lots of support here.