I have found this small bug on the wall in my bedroom, and have been trying to figure it out what it is for months. There are more of this kind. They are tiny, I can't see how they look like with bear eyes. I can only see their proper shape by zooming in. I have seen them on my wall, in my drawer and on paper tissue. I live in England in a very humid, dumpy flat. I have also found bites or allergic spots on my body, but don't know if this bug causes it or something else. Any idea what it is?