Last summer I tried weed for the first time at a concert. Almost instantly I was sitting down and slowly went to a state where I couldn't talk, and if I moved and inch it felt like I was being shoved over, I could barely open my eyes, and the concert seemed like hours. It was the scariest night of my life. Everyone was asking me questions, and in my head I was screaming, but I couldn't talk at all. Everyone said I was just ripped out of my mind, but I had the same as everyone else, and it was a terrifying experience. I am on an anti-depressant and have slightly low blood pressure. I have researched to see what could have caused this, but I can't find anything that discribes what happened. Help!!