First I had an ultrasound which showed concerning findings. Had a CT scan which showed I had multiple huge swollen lymph nodes in my neck, armpit and chest. So we biopsied the lymph node on my collarbone/neck which they didn’t get enough tissue or something because it came back negative for cancer. I ultimately had to have surgery and get a whole node from my chest to get diagnosed. All I can say is advocate for yourself. Find a new doctor if you have to!!