I was struggling with lymphoma worries pretty recently. I had swelling lymph nodes with pain in my neck, I had lost weight and I felt pretty convinced that I had it (or some sort of C-word....).
Well I got checked out for it, Doctor felt my lymph nodes, got a CBC done and everything. She noted that I seem to be healthy, no fever or anything and that in of itself is a very positive sign. My CBC was pretty normal and she told me that even with sneakier lymphomas, there would still be several abnormalities.
The C-Word is unfortunately one of those huge HA leaps we make that end up running our lives into the ground, both physically and mentally.