Hello, when I started a trip last October I suddenly had this horrifying pain in my chest and could not breathe anymore. By now I still have those panic attacks but there came other things in addition. My stomach hurts really fast, I have problems swallowing, I have to burp almost constantly, I get overwhelming situations in which I believe everything to be unreal and additionally, I often have the feeling that my left hand is my right one, or that my throat is not straight but is crooked...