Anxiety is hell. I'm sorry you had such a scare from it. I have had such symptoms from anxiety off and on since age 14. The danger is ignoring real warning signs, someday, because of such a history. It's always best to get things checked out. Always! Believe me that hospitals likely see people with similar, multiple times per day. But that doesn't have to mean you'll end up in a psych hospital. It does mean, in my view, that you should tell your psychiatrist about the incident immediately. Have you called him/her?

We all want you to get relief!