Swollen lymph nodes behind abdomen

Has a routine lung scan they found 5cm swollen lymph nodes behind abdomen had ct scans of neck pelvic and abdomen with contrast so the hematologist she suppected lymphoma had loads of bloods which are all fine she stated that their wasn't any other lymph nodes affected had a ct guided biopsy through my lower back a week today see  my hematologist on Thursday  iv no symptoms but I'm really struggling with my anxiety etc I'm 67 yr old lady x