A couple of months ago I noticed swelling on both sides of my neck, just above the collar bones. No specific lump or mass, just feels like fluid buildup. But now my neck is getting more swollen more often, and throat is starting to feel squeezed. Also there is pain in my chest just at the base of the breastbone that sometimes is felt straight through to my back.
I run 2 hrs/week, swim 2 hrs/week, and bike and lift weights. Chest pain does not get worse with workouts, in fact seem to be better. Swelling, however gets worse. I have had shoulder problems in the past, could this just be residual shoulder issues?
Current (self-determined) treatment is to ice the neck (makes the uncomfortable squeezing feeling go away temporarily, but swelling doesn't go down), and aspirin for pain in chest.
Doc has done thyroid blood test which came back fine. I'm scheduled for a neck ultrasound, which sounds funny to me for some reason. Is this really the right diagnostic tool? What could this be?