6 year old with chronic swollen lymph nodes

Hi. My 6 year old has had chronically swollen lymph nodes for a couple years now, on the right side of her neck. I’ve had the doctors check them several times and they always say they feel ok. Sometimes they are smaller (like pea sized) but often they are larger. One is currently the size of a grape. She did recently have a cold a couple weeks ago. This just doesn’t seem right. Do I push for more testing? Or is this normal for kids?