I had the same thing happen last mammogram. I went in and they did additional views as well as the same views over again. I didn't even realize I was going to get any results that day and was surprised when she came out and told me that the radiologist said everything was fine but to still come back to get another one done in six months. (I had micro calcifications).
My physician, however, wanted me to get a second opinion, and I did end up getting a biopsy which said all was fine.
When all the publicity started about mammogram frequency and age start date, I felt like they were talking about me since I was one of the unnecessary biopsies that came as a result of annual mammograms started before the age of 50. Still, I would rather have the mammograms even with the risk of an unnecessary biopsy and catch something early. I am usually overly cautious, but that is just the way I am!
Grits
2010 Trek 5.2 Madone WSD, SI Diva Gel Flow
2002 Terry Classic, Terry Liberator