Hi Jen. I'm in the same boat and came here via a Google search. 

Like you my symptoms seem to be mild relatively speaking. I've had the swollen lymph node on the side of my neck for about 11 months, chronic fatigue, a continuous sore throat that just stays there and occasionally surfaces to the top and stiff neck and shoulders. I also clench my teeth which complicates the source of my symptoms. 

I had 2 ultrasound and a fine needle biopsy, plus extensive blood tests, no one really tells me the results of anything and keep sending me to appmts for further testing. I have a Pep FDG scan coming up and I'm rather nervous. My next consultation with any kind of doctor is at the end of the month. I'm in my 30s and never drank alcohol or smoked in my life. I'm hoping it's just s really bad infection! And not the dreaded lottery no one wants to win, Cancer.