Hello I'm new here hope all is well as can be. I was diagnosed with breast cancer and had a mastectomy. Had lots of complications I'm on tamoxifen now. But recently referred back to hospital as I've found a swollen lump in my armpit, the side I had mastectomy. I'm so scared please can anyone help me with my symptoms I'm extremely tired no appetite. Unexplained itching all over my body temperature up and down. Waiting on appointment but just wondering if anyone knows if this sounds like lymphoma. I'm so scared does anyone know what will happen thank you.