I need help from someone experienced in drugs, particularly MDMA.
I've done MDMA quite a number of times both at concerts and at someone's place in pill form. However, recently I went to a concert but there were no pills, but instead they offered me MDMA crystals. They were orange-white-ish. It was quite a small shard, maybe 40mg, and I parachuted it. What came next was totally unpleasant, I felt a rush but kind of similar to when you get drunk. I felt high af but I was nauseous, I was dizzy, and I felt that my surroundings (the rave) were absolutely overwhelming. Only had this reaction when I did MDMA for the first time, where I swallowed a very potent pill in one go. Could someone explain to me why this could have occurred? Only other substance I did during the night was 2 hits from a joint, so I doubt that caused it. I also just got another dose of crystals for tonight, it's 120mg of black-white-ish crystals. Should I refrain from doing it? I'm currently not in possession of any purity testing agents.