16 september ago smokes weed, nd then hadalcohol, for a second I could not connect to the surrounding and I started panicking, became tachycardia with dry mouth, did not sleep whole night, and next day I again lost contact but yes I had idea what water in surrounding, my eyes wide open, after two days I was in market and started feeling dizzy likesomething happened I could not understand or even recognise places and then confused, with terrible headache ,i drunk glucose water and was fine, but the episode every once in w hile continuous and I get tachycardia and tunnel vision and now I am having a hissing sound inside my head. After that I did a lot of internet research ,read on books, I am myself a medical student, now I am getting thoughts like I have mental disease all the time, I do not talk much to people, I try to keep me alone, I am always thoughtful ,cannot concentrate in anything, I have no suicidal thoughts, or hallucinations, I try to sleep on time but deep in me I always think about being sick, and the tunnel vision keeps on coming, I keep on thinking I have a mental sickness, this fear is not getting me peace of mind.