I'm On My Way To My Dr. For An Appt.,

I'm on my way to my dr. for an appt., but I thought I'd try to see of I can gather some info first. My main symptom is that I feel like I have something caught in my throat, but it's more of a sensation that an object. In addition, I get exhausted when this happens, literally could fall asleep at my desk, and also experience dizziness and some vision issues. It's been happening for about 6 weeks. I thought it was an allergy of some sort, so I tried over the counter Claretin, and that did not work. Hoping it's nothing serious. Possible an inner ear infection?