Coach, I understand your resistance to see a specialist. Most of us on this board have seen 5 or more at some point in our lives with many many different diagnosis possibilities thrown at us. Stop searching the internet and go to the doctor where they can do tests, like CT Scans, Blood work and MRI's.
In the 5 years since I started getting sick I have been told I possibly had MS, Devic's, Lymphoma, Leukemia and a few others that I can't remember at the moment (sorry, I have CNS Lupus and my memory is really getting bad - thoughts are lost alot) I have had more MRIs CTs and Pet scans than you could imagine. But they are the only way to confirm or exclude anything.
Searching the internet is a good tool, but you cant make it your only tool. Lymphoma has alot of symptoms that are common in many other diseases. I have had several scares with it and it is entirely in the realm of possibility for me since I have been on 2 different chemotherapies for lupus. (I really find it ironic that a drug for cancer causes CANCER!! lol)
I hope you will see a doctor soon. If you have lupus the stress will only keep you feeling bad and can cause disease flares.
Take care and my thoughts are with you! I remember how frustrated and scared I was when it all started too. One thing you can rest assured of... we understand how your feel!