If you ask me, it looks like people are booking profits. Anyway, such volatility is normal, and can be welcomes since it is a healthy one. Bitcoin went down less than 10%, and unless it goes down lower, and I mean substantially lower like below 4000$, there is nothing to worry about. This is what consolidation phase means. We will likely hang around that figure for some time accumulating strength and moment before we surge past recent highs. Which were all time highs, by the way. So you should have expected sort of small correction coming sooner or later. There will always be such, and you should get used to them if you are a novice trader.