I wouldn't say rapidly going down, everything that goes up must come down as a normal practice of law. But in this case it sometimes retraces due to a heavy spike, in my opinion.
I think bitcoin investment is a coin business and profit and loss is the part of business. Therefore it is not good to sell your bitcoin if the price down because the next day it will rise again and you will recover your deficits. Just be patient and cool to wait for some more time. Bad thinking and falls statement about bitcoin future are the reasons for fall in the price.