When you say drinking, do you mean alcohol? Because if so, the alcohol will make your anxiety worse, particularly after its effects wear off and you get rebound anxiety that's stronger than the anxiety you had to begin with. If you don't drink alcohol or use benzodiazepines for anxiety (which would cause substance-induced anxiety disorders), then you may either have generalized anxiety disorder or panic disorder. For either, follow up with a a psychiatrist. Episodes of panic attacks can be very frightening and feel very dangerous and life threatening, but they're completely safe. They just suck.