 [ Symptoms ] my lymph nodes under my arm are swollen pain level 8 went to er no solution need advice [ Disease ] when you check in tell them that your doctor told you to come to the emergency room since a fever is an emergency when receiving chemotherapy this may be an indication of an infection cancer patients receiving chemotherapy should not sit in a waiting room for a long time while you are receiving chemotherapy fever may be a sign of infection infections can become serious and even life threatening very quickly visit www preventcancerinfections org to learn about the steps you can take to prevent an infection during your chemotherapy treatment