Okay armchair doctors, what say you to this?

Last week my monthly showed up a week early. 3 days prior to the Arrival my breasts (espcially the nipples) were extremely sensitive and painful. Period starts very heavy and halfway through I get really painful (like hot poker) jolts through my right armpit. I figure it is just a new manifestation of peri-menapausal symptoms I have experienced since the birth of my daughter 6 years ago. Saturday I noticed that my lymphnodes are swollen. I look like I am smuggling 2 golf balls under my skin. They don't hurt, but are sensitive.

I am in my early 40s, don't smoke or drink, haven't been ill and exercise 3 to 5 times a week.

Maybe pertinent: Last year went through a series of tests to discover why I feel like I have a pain under right breast that feels like I am skewered with a mop handle. Some days pain is very bad - other days - not so much. Nothing was found in tests - have learned to live with it.

Maybe pertinent 2: Mother is currently being treated for NHLymphoma.

I am tempted to wait it out and see if it clears up on its own. I would hate to waste my time and the doctor's just to find out it is a hormone spike.

What do you think?