Bitcoin price fall and increase is common, everytime during the fall people will be getting panic and used to sell low missing the profit. With bitcoin one need to have patience to profit rather than selling on panic. This time the price drop is very big, but the same doesn't have a perfect reason behind as every digital coin is experiencinga drop and only very few are in the price pumping.
No you should not panic at all,You should calm and you can think what is the best to do,because if you panic your mind will not think the best thing to do,You must be patient and be humble,if the price is getting fall then you should think the best thing how and what to do so that you will get the best currency and good profit.