Every December people loves go spend their money and usually the market corrects during these time and yes it happened, maybe some are just spending their money instead of paying huge taxes by next year, so this normal for me. What you can do right now is to keep on buying, we know Bitcoin will recover, so buy now.
Yes, every year we'll be experiencing similar pattern of market correction causing small decline in the price. Further the same gets growing by the start of the new year. Last year during the month of November the price was $9000+ and it gradually declined and reached $7000 by December. Once again started to bounce from January crossing $8000. Maybe the same kind at the present market price can happen this time.