Originally Posted by
joypulv
See a good dentist. 25+ years ago I had a crack under a crown that didn't show on X-ray, but it gave me severe bronchitis and fatigue from infection going down into my lungs. A periodontist identified it immediately and removed it, and I got better in a day or two. (My regular dentist didn't find it.)
The 'allergies' could be low grade sinus infections from your teeth.
Second, if it isn't a jaw infection, go to a medical clinic and ask to be tested for Legionnaires Disease, just because this started at a hotel. Tests are a chest X-ray, sputum sample, and urine sample. It's a form of pneumonia.
(I'm assuming that you are an adult from the way you write about this.)