Good morning, @rubles. Hi Pam, It would be best if you could get an appointment with an hematologist oncologist. However your primary care physician can also order the tests needed to diagnosis NHL

They may start with blood work, imaging such as CT or MRI or bone marrow biopsy. First they would likely begin with blood work. Here is a good source of information for you! https://www.mayoclinic.org/diseases-conditions/non-hodgkins-lymphoma/diagnosis-treatment/drc-20375685

I know in past conversations you’ve been concerned about having thrombocytopenia (low platetlets). Did you followup with a hematologist?