Market is always fluctuating, the price of bitcoin and other altcoins, too. After Bitcoin reached $20k in December, 2018 now bitcoin is adjusting and i think this correction is very necessary because this will help consolidate the price of bitcoin. When bitcoin reached $1000 first and then it went down $200, many people also said that bitcoin would downfall but in fact is quite contrary. I believe the price of bitcoin will soon reach $20k in april, 2018 and the end of 2018 it can reach $40k.