Yes, basically when the price increases too rapid expect that there will be a rapid decrease too so yes this is a very normal thing.
everybody knows that when the price goes up by a lot of money, then it is obviously going to go down.. there is nothing new with that people.
stop worrying your asses only for pure fear, that is not worth it.
and there has been a lot of people selling their bitcoins at $12900 today, and now it is upto $15000 each bitcoin again.
Not everybody, if it does no one will ask if this is a normal thing. They are surely worried about their bitcoins on held since they are new to this market but yeaah they should stop worrying about their losses. Price is just varying around again from $14,000 - $15,000.