What I think may have happened, is that while you were coming up, you tripped out a little bit, a proper mindset is essential to a good roll. I don't think that there were any adulterants in your pills because you said that your gf felt good and danced a lot. The problems usually occur while coming up on MDMA, and then you even out on the peak. So keep that in mind next time. Also, Im not too sure about Brazil, but there is almost never rat poison in ecstasy pills from what I know. It's just bad for business.