Helloo .. Pain on the left side below the Collar bone and ear infection
with a History of treatment for Hodgkin's Lymphoma
Relationship of Ear infection with pain in the Collar bone area is a remote possibility. The ear infection would produce painful lymph nodes around the ear, especially on the back side of the ear lobule. They also resolve very quickly with antibiotics.
What u should be concerned about is the recurrence of nodes and or bony infiltration of the hodgekins infilterates. The nodal involvement and bony involvement can produce this kind of pain.
Also please look into movements at the shoulder and the shrugging movemsts at the shoulder, if these are painfull it could point to a joint problem.
The final advise is to have an urgent examination at the centre where Hodgekins was treated.
This should be taken up urgently for an assesment.