notify primary care doctor of patchy area on lung?

Hi everyone.  I am new to this site.  I am looking for some advice.  I was diagnosed with stage lla breast cancer in 1999.  I had chemotherapy(4 rounds of Adriamycin and another drug that I cannot remember at this point).  I also had 6 weeks of radiation and finally tamoxifen for 5 years.  This past weekend I was feeling terrible-fatiqued, chills, fever of 102.7, headache, etc.  I went to one of those emergency clinics and the doctor ordered a chest x-ray to rule out pneumonia.  You should also know that I had similar symptoms 3 weeks ago and I took an antibiotic at that time.  Anyhow, the chest x-ray showed a patchy spot on the lungs (I felt so bad while I was there that I forgot to ask which lobe the spot was on).  The doctor said that this was either pneumonia or an inflamed enlarged lymph node.  I have assumed that it is pneumonia even though I really have very little cough.  My question is: should I notify my primary care physician about the spot even though it is probably just pneumonia?  Also, for the last year, my wbc had been a little bit below normal.  It has been 4.0, then went to 3.8, then 3.6.  My doctor sent me to a hemotologist when it was 3.6 and she attributes the lower than normal wbc as a side effect from the chemo. I recently had the wbc checked again(routine cbc) and it is 4.0.  I have been sick on and off again for the last several months-primarily for what I thought was sinus infections.  My primary care physician is not the one who treated me for the breast cancer-both my surgeon and oncologist have taken supervisory medical roles and do not see patients.  Also, my mother had lymphoma 3 times and my grandmother had lymphoma 3 times (my grandmother was not my mother's mother).  I know that I probably have nothing to worry about but any input would be appreciated.