Reading your story, Sharlye, really reminded me of what happened to a family friend after a trip to the Caribbean. She came back covered in bites, feverish, and completely worn out - ended up in the ER too.
They thought it was an allergic reaction at first, but it turned out to be bed bugs from the hotel she stayed at. After trying creams and medications, she finally had to call in a professional company for help. She used a bed bug heat treatment Richmond Hill service when she got home, and that's what finally cleared the problem.
It's sad how often this happens, especially in places that brush off guest complaints like nothing.