That is normal nothing to be worried because the price is drop high that is the right time you can buy cheaper bitcoin and keep it or you can use it in trading to earn more profit,the reason why bitcoin dump because of holiday season many bitcoiners exchange there tokens into real money,as you can see today the bitcoin price is pumping greatly it's price will coming high you need to be patience don't panic because bitcoin price is fluctuating and that is a part of crypto currency.