Hi SoCal and welcome.:)
I echo Hibbe's advice above...checking in with your doctor is always a great 1st step.
However, it is likely that what you are dealing with is increased anxiety symptoms, rather than withdrawl. It is unlikely for the short duration and low dosage you were using that you are having discontinuation issues.
Also, as far as the alcohol question? Xanax has a short half life (12 hrs) so as long as you were not drinking on the same day as you were taking your Rx., you should be fine.
What is your plan now for anxiety management? Do you have a means for seeking therapy as Hibbe mentioned? If so, it is highly recommended by many members here! I myself benefitted from it greatly.
Self help is another option that you may want to consider. Here is the link to our Resources where you will find great recommendations...as well as other insightful info.
https://www.healingwell.com/community/default.aspx?f=9&m=104206
Great job on reaching out. Support is key, and we understand and care! Post anytime.:)
Scaredy Cat