I Wanted To Ask Your Opinion About A Possible Unnecessary

I wanted to ask your opinion about a possible unnecessary surgery. I went to the doctor to get back on paxil. During an exam he noticed a swollen lymph node in the groin area. He took some blood and did blood work. a week later he called and said he wanted me on antibiotics because my white cell count was elevated due to infection and/or cancer. (i'm 43)Two weeks later for a follow up appointment, he seemed to think the swelling did not go down (it had in my opinion) and without a follow up blood work he sent me to a surgeon for a lymph node biopsy. In his opinion I had lymphoma or a blood cancer. I was scared of his news and agreed to the surgery if insurance would cover it. I had my doubts but when a doctor says he thinks I have cancer, I wanted to know as well. Biopsy said no cancer and no infection. Was this a rush to judgement on his part? Can he think cancer on one blood test and one slightly swollen lymph node?