Do bed bugs bite the same spot?

Bed bug bites may. Cause no sx's or signs in some except for 2 small points where skin was punctured by bedbug. When there's a reaction, it may show as fast as an hour or it may not show for several days after being bitten. It can cause itchy, pink, swollen, lesions which are clear in center. In cases of hypersensitivity blisters may develop. A telltale sign is a linear track of lesions from sequential feedings – >.
Not especially. Bed bugs crawl on the skin and more likely will bites in different locations but specially on exposed areas of the skin on the arms and legs.