Suggest Treatment For Lumps On Neck Of A Child

I have a 9 year old who has had lumps in the side of her neck since she was two. Two doctors said don t worry it s likely swollen lymph nodes, as they shrink and grow. These have been squishy and moved around, and didn t really bug her. On occasion they were minorly tender. She has allergies. But recently she is complaining and crying of pain from a different kind of lump at the base of her skull, that are hard and do not move. I have been giving her advil for the pain. ON sunday she cried and was lethargic and fevered, stating they hurt so bad. we are icing them daily. Please advise I am concerned. WE live in a rural area where referrals take long.