I got all four of my wisdom teeth pulled out exactly a week ago. I can’t really see my top extractions, but the bottom two had previously been filled with this yellowish creaming colored substance. I was brushing me teeth when I think I accidentally brushed on one of the extractions, causing whatever that yellowish/creamish substance to come out. I looked and this black hole started bleeding. I put a gauze for about 30 mins. I took it out and now it’s just this black hole. Is this a dry socket???