Worried about my health! Lymph nodes swollen, advice?

Let me start off by saying that I am only asking for personal opinion or experience, and I am not self diagnosing. I will be seeing my doctor this week to follow up. Okay, here's what's going on! I have been sick a lot for the past month and a half. In January I had pneumonia and what was thought to be the flu. My nasal swab was negative, but my blood test showed low white blood cells, so I was treated for the flu with Tamiflu. Finally after several weeks my appetite and energy level returned. Now I have another cold. Of course the first thing that came to my mind was Cancer when my doctor said my white blood cell count was low.. (it was 3600) I'm a worry wart. Anyway, the lymph node on the right side of my neck under my jaw line is rather swollen, and it has been this way for over a month. It's smaller than a golf ball but larger than a quarter. The one on the left side of my neck isn't as swollen, but it is swollen. I am eating better and my energy is returning.. Could I be looking at lymphoma or is it normal for one side to swell more? I'm seeing my doctor this week.