as far as i know, pills lucid your system in 2-3 days, drink a lot of water.
if you must take a sleeping tablet, just buy some over the counter next time.
First, whether it is your perscription then you have nothing to worry about. I suspect it was not your prescription, hence the impeach. Depending on what is in the tablet, maybe, but not likely. Most sleeping pills do not contain any narcotics, so they would not likely show up on a urine screen. Five days is usually sufficient for any drug to clear your system anyways.
Yes.