maybe that was the demons nug and you smoked it... hes probably pissed, dude, if i was you i'd get a strong ass sitter, smoke some more salvia and talk to this demon, find out its name, and where it came from, just ask it questions and dont answer any of its, just ignore them. ive actually read up on black majick and this is the way to do it, demons love playing mind games because they cant hurt you any other way, after you find out the demons name i suggest you get some books on this subject and read up, a name is a very powerful thing.