Hi, my daughter has a lump on her neck near her right ear that has gotten bigger over night. It was the size of a pea last night and has gotten to the size of a marble by this morning. She is thirteen years old and says her neck is tender. I have been trying to get her to the doctor today, but they have no appointments available. Is it safe to wait the weekend? Should I be worried about it being something serious? Just want to know what a professional would think. Thanks for any information you can give to me or assurance.