Lymph nodes have swollen out of no where after having allergy shots. what should i do?

Not related to aller: I would check with you allergist whether this is related to the allergy shots, i doubt it. I have never noted adult patient's develop swelling of lymph nodes from conventional allergy shots. While the shots are designed to stimulate the immune system and lymph nodes do contain the immune cells the reaction generally is not intense enough to cause the nodes to enlarge.