Hi Corinne,
I hope you're feeling a bit better.
Like you i'm 24. I also have long term issues with anxiety. Whenever i quit drinking, I get immediate severe panic symptoms / attacks for a few days. If you are still having these after a week its definitely worth seeing a Dr. There are a plethora of things that can help long term anxiety issues. Most people will get anxiety on quitting, but for some of us with long term anxiety issues, stopping drinking will not necessarily make that go away.