it is understandable why people are starting to panic. the bitcoin was up for a long time and then suddenly the slow continuous downward movement. what makes people panic even more is that bitcoin is still new so the history of its performance in the stock market is difficult to understand. its also a digital currency so maybe people think that it will keep on going down. or that it was just a trick to make quick money and now the game is over. but you can always sell whatever you bought, even if for  a small profit