The only place that you have palpable, (
lump that can be felt), lymph nodes are in the arm pit.
above the clavicals, in the neck, and in the groin area. The rest of you nodes are inside your body. They would have to get huge to feel them. It is interesting that you have this symtom though. I haven't been able to find anyone with these exact symtoms. I do also have tender spots on my ribs. Have you had a physician determin that these were lymph nodes?