Swollen lymph nodes

I have 4 swollen lymph nodes on my neck. They’re about the size of grapes and can move. Been this way for 5 years. I’ve been to the doctors twice about this. Both times I’ve been told to calm down and that they feel normal. They won’t send me for scans. I’m tired a lot and sometimes itchy. I don’t know what to do. I’m a 23 year old female