First time eating brownie and using marijuana. Baked brownies with 2.82oz cannabutter, 16 normal size brownie pieces. Ate one piece and had bad trip, I was paranoid, thought that I will die and smth bad will happen, dizziness, similar from reading other people edible bad trips. Next day after bad trip felt hangover, had irregular heart beat, changing emotions (happy - sad - crying), and it's hard to stay alone because of fear. After 2 days from bad trip, had panic attack and doctor said that I have vegetative-vascular dystonia. Looked up on google and didn't find any info that marijuana can cause it. Does anyone have had similar experience? Looking for any help.