About a week ago, I tried mdma for the first time. I’m female and definitely a lightweight when it comes to any sort of drug. Took 200mg dose (assumed it was normal dose because brother said so), and had an intense experience. I don’t remember much of it, but it began pleasantly enough. I felt a cold tingly sensation in my brain, followed by intense happiness and seeing everything glow in color. But my teeth were chattering pretty bad. I ended up going to my room, closing the door, and sitting on my bed--hunched over my laptop. This was the peak of my roll, and suddenly the teeth chattering got out of hand. I remember chattering so hard that it was scaring me, so I tried to close my eyes to relax. As soon as I did, my jaw and arms tensed (I think my arms went straight out but I don’t remember), my back violently arched, and I felt my eyes roll into the back of my head. When I woke up, it was morning and I was lying sideways in my bed. I don’t remember most of the trip, unfortunately. I asked my brother what happened, he said I kept coming to him and repeatedly asked where my cat was. He said at one point I was turning a broken light switch off and ‘on’ for 5 minutes. Told me I eventually went to my room and shut the door, so I was alone during this. Could it have possibly been a seizure or am I overreacting? Thanks