High Lymphocytes and Lymphs (Absolute)

Hello everyone, I am a 20 yr old Female.
A couple of weeks ago I had a horrible pain in my right leg... (groin area) and went to the dermatologist, and she said I had a femoral hernia. I went to the a General Surgeon and he said that I was misdiagnosed... I had a swollen lymph node. A sonogram confirmed it. I was sent to get blood work done and I suppose that for a lack a better words.... "obviously" my  Lymphocytes and Lymph (absolute) were above normal ranges. My doctor wants to do a biopsy to figure out what might be causing these damn elevated results... I am afraid.... My WBC is a little high and barely makes it within the "normal ranges".
I have been experiencing persistant nausea, and slight headaches... (I might be pregnant but I won't know until thursday, feb 19.  which is when I am due for my........)
What are some of the reasons that I should research why my Lymphocytes and Lymphs (absolute) is elevated?

I really appreciate your help,
Thanks alot,
A.B