I'm glad you went to the ER. It sounds like you had a good scare.
It's likely that you will feel "normal" in a day or two. That's when you need to really start working on your recovery plan (After blowing it off for years, I finally got desperate enough to go to AA, glad I did).
What you need to guard against is feeling really good in a week or two, and having the memories of your horrible withdrawal fade. You don't want to drink again. You don't know if you have another "recovery" left in you.