E.F.
My husband had a swollen lymph node the size of a golf ball on the back of his neck - it was a tiny lump, then suddenly became huge. It turned out he was reacting to the bites of those little black flies that come out around this time of the year. (he was building a deck on our house at the time)
I hope this helps - things other than cancer can cause swollen lymph nodes.
However, I know how scary it can be to wait for test results. If you want your mamma, call your mamma. She probably knows exactly what to say to you.
After I found out my test results were negative for cancer, a friend of mine was dumbfounded that I hadn't mentioned it while I was awaiting such news. I was giving a "friendly" lecture about what friends are for - and in this case, isn't this what family (especially mammas!) are for?
Go call you mom!
(and let us know when you hear your good news)