Swollen gland and extreme pain.

[Bnagy]

On Wednesday morning I woke up to a VERY dry mouth and proceeded to drink a water bottle really fast... TOO fast.  It felt like water got in my lungs (not sure if that is even possible) but my chest was very compressed for about a minute until the pain went away but immediately my lymph node (i think) on the right side (under my ear and chin) started to swell.  I didn't think much of it at first and thought it would go away.  The entire day I was in mild discomfort but didn't really think too much about it.  Later that night my cousin came from WVA and we stayed up till about 1 talking.  When i went to sleep the pain had worsened and my jaw felt really sore.  I woke up constantly throughout the night with extreme plain on that gland/lymph node.  I went to the doc around 12 the next day and they diagnosed me with a middle ear infection.  I have been on amoxicillin the past 48 hours now but the swelling doesn't seem to be going down however the pain has been reducing a little (cant tell if maybe thats just cause of the constant tylonel / advil im taking).  Now the main thing that has me a bit worried is it has been extremely hard to eat.  I can barely open my mouth now and if I try and force it past the comfort point it hurts A LOT.  Now I'm mainly just looking for other opinions here.  Am I just freaking out a bit and should give it a couple more days? Or should I go back to the doc to see if its something else?? All help is appreciated!