I would still go to a meeting tonight if you can - like RAL said there is no requirement for you to be sober - only that you want to stop drinking
Try not to worry about the heart stress test - there's nothing you can do about the result - you will either pass - which is good - or they will find a problem - which is also good cos then they can fix it
I understand the fear but drinking is simply going to leave you feeling weak and depleted tomorrow.
Maybe watch a funny comedy instead -lots of stuff available Free on I view, SBS on Demand, or any of the commercial stations.
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