woke up with 4 bug bites one on my arm and 3 on my leg. I found a small black spider by the crack of…

woke up with 4 bug bites one on my arm and 3 on my leg. I found a small black spider by the crack of the wall meeting in between my bed and the wall. do you think it's appropriate to assume it's the bug who but me. I know that spiders are often blamed for bug bites even though they aren't caused by them specifically. few years ago I would have to go to the doctors for severe reactions to bug bites that they couldn't even tell where they were coming from and they have told me that most people falsely blamed spiders for bug bites. opinions please.