I went to a pediatriton and she said I have inflamed lympthnotes is there any chance it could be something else. Irregular bump on back of head pain?

Lymph node. The neck is interesting. Cannot give you an answer. Assuming you have an enlarged lymoh node, you should see doctor again if the node is not back to normal in 2 weeks. This is a general rule of thumb. History of your condition, reevaluation, and testing is indicated in some cases.