Keep in mind that bitcoin is still very volatile and we should already be accustomed to it. Just remember that in June, after setting a new record high at $ 2,800, by early July the price had fallen to $ 1,800, a drop of almost 40% and then rebound to the high levels of recent days. So I think we should not be scared and take the opportunity to buy while the unsuspecting sell.
Frankly its a very good buy opportunity as the prices have dropped almost now 700$ form high and future seems to be bright. Though there is a little correction has taken place due to which the fall is happening form past 2 days. I would not panic much about this as bitcoin is volatile and we know the strong rise that happens after this fall with bitcoin.