It may not necessarily be alcohol related. From a quick search:
"Anxiety disorders affect about 40 million American adults age 18 years and older (about 18%) in a given year, causing them to be filled with fearfulness and uncertainty.
Women are 60% more likely than men to experience an anxiety disorder over their lifetime. Non-Hispanic blacks are 20% less likely, and Hispanics are 30% less likely, than non-Hispanic whites to experience an anxiety disorder during their lifetime." NIMH · Anxiety Disorders
I would talk to a doctor to see if there are treatment options for you. Good luck - I've suffered from anxiety at night (when falling asleep) and it's horrible. Literally feel like I'm dying.