this is a very controversial time.some are telling cryptocurrencies about to expire now. some are telling this is the end of the journey of bitcoin. they predict it will down up to USD 200 or less than that.some are telling bitcoin is just a bubble and its about to burst and it will never recover.. others are telling this is the best time to invest on bitcoin and you never get such a low price in future.. the expect this downtrend will finish in near future and btc will rise up to new hight in April /may. any thing can happen. very difficult to predict. so the best thing is avoiding invest in this kind of controversy period. so please wait and see what is going to happen. if you really want to invest .its better to invest on altcoin other than bitcoin. highly recommend etherium or neo.
goodluck