I have noticed these extremely small, hard to notice with naked eye bug for about 3 nights now. Twice on my body in the kitchen and once on my thumb in my living room. I managed to catch one last night from my living room which has an area rug near a mattress, coffee table and couch. I managed to put it in a small 2 inch box with white lid. Today it seems little brownish and inspected it under a microscope.
First picture is of the box size to put some real world perspective on the actual size.
Second pic is of the bug lying on the white lid, doesn't seem to be even 1.5 mm.
Third and fourth pic is from the microscope(150x), I had to move the bug so I might have squished it a bit.
We are getting bite marks and are almost convinced that this bug is the reason as we never had a bug problem ever. The only other thing we noticed is a silverfish in our living room but not sure if that can cause these bite marks.