What you're seeing is people selling Bitcoin because of the uncertainty in the next days. On Monday there's a discussion about the regulation of virtual currencies in Europe. And in March there's the G20 in Argentina talking about global crypto regulation.
People are always afraid of the unknown, most of them maybe lack of experience, dropping of price may occur if everyone sell their bitcoin because of those fear with the unknown outcome from some other issue behind the line of crypto currency. I think we only net to set and wait for the next update we don't have to sell quickly maybe we are contributing such huge dump if we do selling this time.