Two recent trips to the ER, the first for being unknowingly given synthetic marijuana at an industry event, I passed out from what witnesses say and began to have convulsions, but i experienced Hallucinations while unconscious which is what tells me these may not have been convulsions but me consciously reacting to what i was seeing and experiencing at that point. i was taken to the hospital. a few days later, after i d felt the harmful drug was out of my system i smoked again, this time a tobacco/weed mixture i learned about in europe..this made my heart beat extremely fast at about 160 bpm paramedics say, although there was no chest pain or anything and i was fully conscious they monitored me and as time went on it went lower and lower, at the hospital they put me on an IV with a drug to calm me down from what the nurse told me. The days since ive felt like my heart was kind of irregular in some way, whenever i stand it beats faster than it should until i am back in a resting position. i also WAS getting a mild lightheaded feeling when standing up too fast. but that has always happened off and on throughout the years. I plan to sched. an appointment for Monday as i was told at the ER to follow up with my doctor, but i was hoping a quicker answer can be attained before i head there. Thank you