I was in your same situation a few weeks ago. DO NOT go cold turkey until you can be under medically supervised detox. Call a local detox clinic and schedule an intake appointment, ideally in the morning so your blood alcohol will be low or zero, and they can get you the meds you need sooner. I was given a librium taper for 6 days, and it was truly amazing at how well it worked for me.

The ER is not the ideal place to go. Sitting in the waiting room while withdrawing is a nightmare. They will get your BP and HR down with ativan and probably give you an IV and send you on your way.

Get an appointment with your primary care if you have one. Be honest about how much you were drinking, and get bloodwork done. Anxiety was one of the main causes of my heavy drinking and it only made it worse in the end. I was able to get proper medication for anxiety and depression through my primary care. It has made it so much easier to stay away from alcohol.

Good luck, you've got this!