Personally, I am always sure to drink LOTS of water while I'm rolling. Normally, I don't have to pee too much more than usual. What follows is something that has happened to me on a few occasions and let me tell you it is no fun at all. I use to take a lot of pills(maybe 7 or 8) a night, before I was educated about MDMA and on a few of those occasions my urination would be fairly regular throughout the night, but when I would start to come down and want to lay down in bed, I would be overcome with the urge to piss. To the point that I could not hold it anymore, then when I would go to the toilet, I was only able to muster a trickle if I was lucky. I would go back to bed and suffer the urge until it was unbearable and then go try again, with the same results. This would go on for a couple of hours. I don't know what caused this. Maybe bad pills, maybe too many. I've only rolled a couple of times since I got a test kit and it hasn't happened since. I also limit myself to 2.5 a night now. Anyone know why this was happening?