Welcome to PC. As far as the first incident.....Have you used pot before that? The first few times can have some very bizarre and hallucinogenic effects. I remember vomiting quite a bit my first few times. The THC content is very high these days. Do you know the source of the pot and it was not some synthetic stuff? Synthetic can be very dangerous.

If it was just regular pot I don't see that having any long term effects as you describe in your second paragraph. Anxiety and panic attacks can have different symptoms for different people. I have gotten a lot of pretty bad anxiety but I never think I am having a heart attack like my buddy does.

If you were on meds was it from a psychiatrist? What did they think? Have you ever had any symptoms before this?

My symptoms tend to be very irrational fear, paranoia, digestive issues, some times a very weird excess energy up and down my spine, agitation. A sense of impending doom. Mine has been very well controlled with Klonopin but I don't get sedated or foggy from it.

Did the ativan take away the symptoms?