Geschwollene Lymphknoten

Hi, i do have multiple swollen lymph nodes all over my body. 2 over my left collarbone, 2 in my left armpit and 2 in my groin. All the sizes between lenses and beans. They didnt really change in the past 2 years and got screened by an oncologist without any concerns. They do regularly freak me out an i am constantly worried they might change. Does someone experience similar or might have an idea what this is? thank you!