I found a stain on my bed sheet under where my shoulder/back usually is. Took off the bed sheet and found the stain on the mattress as well. Bedbug?!
Hello, and welcome to our forum. Unfortunately, it’s impossible to determine whether or not these are signs of bed bugs or they’re from another of many potential sources. I would keep an eye out for other signs of bed bugs, as this would just be one piece of the puzzle.