hi there, sorry to hear that you are feeling so worried right now.
The kind of swelling that you describe is nothing like the symptoms of lymph tumours is nothing like that, a friend of mine had that cancer and survived.
I often when my anxiety is high (like now) get the same symptoms you have, please dont work yourself up, doctors are ace when it comes to this.
Have a massage and practice really tensing up your neck and shoulder muscles for the count of 20 then relax and let your shouders really droop,
it will really ease i promise xxxxxx
I CAN, I WILL , I AM