I see a slight drop in the price in the last couple of days and that made me think, why this might happen now.

My best
guess is that a lot of people might be converting bitcoins to fiat to enable them to buy cheap goods at retailers that are not
offering Bitcoin payments. Will you also cash out some bitcoins to shop at Walmart or Amazon or whatever retailer you shop
at, that are giving these massive discounts? This will surely explain the drop in the price, a week before Black Friday
starts.

I see no other major announcement that would explain the recent drop in the price.

For me that is not a reason why it would affect the market? The price of every coin is not depending on every shopping discount, it was depending on how many people sell or buy a coin if they panic the price will continue to drop down because many people would sell their coin and it was obvious that they can't handle any pressure it might be.