Hi Jlg19,
Most often such symptoms indicate something other than lymphoma. You are doing well letting the doctors examine you thoroughly. Go on with that until they find out what your problem is. A cat scan can be part of these investigations.
Even if it is lymphoma there is good hope. I had it in my brain in 2012 at the age of 68. I got the toughest treatment including autologous stem cell transplant. After that I was weak for months, but since more than 5 years I am healthy and quite fit again, with only a slight numbness of my feet (neuropathy) as the remaining very small problem.
Good luck to you!
Sten