Alright so I know this is no place to ask a question like this but I feel like I'd get a correct answer since many here are very smart. Okay so I'm 18 and when a week after I graduated I got high off weed for the first time. It was horrid I felt like I was dyjng and had a sensation of death. Stupidly I did it one more time and it actually felt good. Since the2nd time felt good I did it a third time about 3 weeks ago. It was bad because I had another panic attack and sensation of death. I controlled it though because I knew it would pass. Okay we'll yesterday on my way to target I was alone, driving in my car. On a red light I was thinking about something and all of a sudden I got a horrible panic attack and was scared out of my mind because I wasn't high so I didn't know why I was experiencing this. It only lasted for like 30 seconds and I somehow made it go away by not thinking about it. I tried to remember what I was thinking about before it happened but I couldn't. Now every time I think about it I get a uneasy feeling of it possibly happening again. I am really good at making it go away though. Now why did I get a panic attack? What happened to make it occur? I do get them sometimes but rarely like three times. Once when I almost drowned when I was young. Second time when I went to my parents home country and sort of had a culture shock/panic attack. The last time was yesterday. So can anyone help me out and explain why this happened and how to prevent it from happening. I mean I understand if it was a life threatening situation to get a panic attack but this last one happened out of nowhere.