Throat problems for 16 days now?

I have had problems with my throat/neck for the past 16 days...it started on a trip to Disney and hasn't gotten better since...I went to the doctor but all he did was touch my throat say my lymphs were a little swollen and give me antibiotic and said he didn't know what was causing it.

Anyways my lymphs in my neck swell on and off sometimes to the point that they are so swollen I can't touch them without a very tender pain.

Also I have a really dry mouth and on and off sore throat and when my neck is swollen my saliva gets like really thick and its hard for me to swallow sometimes I can't even feel the side of my neck thats swollen when swallowing.

Also it can cause me light headaches and slight ear aches (doc said nothing looked wrong in my ears so I guess my throat swelling is connected to that)

Anyways...does any one have any idea what this is? Also my voice gets hoarse on and off depending how bad my throat swelled that day.