I found this under my mattress—at first I thought they were insect eggs, but the reality really surprised me. That day, I decided to turn the mattress over, just to air it out and clean the sheets. Everything was going as usual until I noticed a strange pile of small black grains in the corner of the bed. They were matte, with a slight sheen, like tiny coals. I froze. At first, I thought they were insect eggs—maybe cockroaches or some kind of beetle. My heart started beating faster, and I even felt a chill run down my spine. I carefully collected a few grains on a piece of paper and began examining them. They were too hard and dry to be anything alive. But still where did they come from under my mattress? Honestly, I was shocked when I realized what they were. Have you ever seen anything like this before? I shared the details in the first comment