Hey, I took MDMA last night for the first time and I know it wasn t cut with anything. I took 120 mg orally and I weigh 150 lbs. When it started to take effect, my back started to hurt and the pain grew until it was in my chest too and I had shortness of breath. When I woke up this morning, I still had that acute chest and back pain so I took 1000 mgs of Acetaminophen. It was already beginning to subside and now Im feeling even better, but I was wondering if it is normal to feel that. Like I said, it was not mephadrone or anything like that.