breast mass

i was called back in after a mammogram finding.  I had to have a bilateral mammogram and ultrasound.  After viewing, the radiologist told me that it was a small mass and it didn't seem cystic but there had not been any chang in the mass since 2005.  I didn't even know that I had a mass in 2005.  They don't want to do anything now but wait for my 6 month mammogram.  I'm feeling funny.  I want to know if I should get a 2nd opinion or get a breast biopsy.  Can you help me?  

[Cleveland Clinic]

Dear honey1952, Over the internet without knowledge of the details of your situation as well as ability to review the films, compare to prior films, ask questions etc.  it is difficult to make specific recommendations.  If you are concerned, you could opt to have a second opinion.  The consultant would need to have available the current films as well as the past films for comparison.