I've a question about redosing. I took 50mg of ecstasy last weekend and it was a perfect amount, kinda strong. About a half an hour later I took another 50mg and the roll turned really unpleasant, I threw up and got a bad headache that lasted for a day. Still, the effects only lasted for like 2 hours? I accidentally took way too much at a festival three weeks ago and had a comedown for 3 days, could it be the reason that it didn't last long enough this time? How much should I redose and when? I'm kinda new to MDMA and I have zero tolerance for any drugs. Even my more experienced friends don't know anyone who has a tolerance as low as me.