The answer to 'why is my bed bug scratching sounds' is that the scratching or rustling sounds are likely caused by bed bugs moving around and feeding on you while you sleep. Bed bugs are small insects that feed on human blood, and their movements and activities can create audible noises that disturb your sleep.
Bed bugs often hide in cracks, crevices, and seams around your bed, and they come out at night to feed. As they move around and bite you, you may hear faint scratching, clicking, or popping sounds. This is a common symptom of a bed bug infestation. If you're hearing these noises, it's a good indication that you have a bed bug problem that needs to be addressed.