Eeeeesh, my friend was in an almost identical situation for awhile. He accidentally smoked some dusted weed and was in that same state for more than three days. It went away eventually, but it was bad in the meantime. Even if your friends assure you it wasn't laced, they can never be absolutely sure unless they grew it themselves. Shit does happen, man.

Ride it out, that's all I can tell you. And yes, "blowin a bone" is common here on the east coast.