First haematology appointment

I've got my urgent appointment at the hospital Monday . I've had weight loss , mouth ulcers , tightness and numbness in the chest , and swollen lymph nodes in the groin . I've been ok but now the appointment is nearly here I'm getting scared . At had a blood test at the doctors and I have a low white blood cell count , also I've lost feeling in two of my fingers . What should I expect at the first appointment, any experience that anybody has had would be much appreciated.