I am sorry but something is not clear in your post. You mentioned that two years ago you had a bone marrow biopsy and this lead to your doctor suspecting lymphoma vs. hairy cell leukemia. So have you been diagnosed with any of these diseases?
I do not have an answer really for why you feel your lymph node to be more swollen on waking up other than that it could be a result of edema that results from pressure on the lymph node while sleeping.
Of note is the fact that at their current size they do not seem to be clinically significant. However, given the results of your blood picture it is advisable to pursue investigation further.
Have you had any biopsies.
Dr. Tamer Fouad, MD
MB, BCh, MSc Internal Medicine.
Consultant of Hematology - Oncology.