Hey Susie,
One good thing is that it hurts as that usually means infection. I had lymphoma 22 years ago and I remember the Dr. pushing on the lymph node in my neck asking me over and over are you sure it doesn't hurt.
I know how scary the waiting and wondering can be. The important thing is you are having it checked out.
Just try to take those slow deep breaths.
I'm praying that it's just an infection. Let us know.
((HUGS)) to you.............