It's been really hot here so I had the AC on all summer. Last week a few nights were cool so I slept with the windows open. I woke up 2 days ago to find I'm basically deaf from fluid buildup in my ears! I tried OTC decongestants to see if they work, but nothing is helping and this is day 3 with no relief yet. I guess I'm due for a dr. visit, but do allergies cause something like this? That's all I can figure out This is just awful! I am totally blocked up. I am prone to sinus infections but this doesn't feel like that...it's all ear related. I feel like I'm living in an echo!