Not necessarily, no. In fact, in all likelihood, no. They always err on the side of caution which is a good thing. It's natural to panic - I had my first mammogram earlier this year & all was fine. But my daughter, 25 at the time, was recalled last year - she had a lump that had to be investigated & biopsied. And she has a strong family history of Breast Ca. But she was absolutely fine - an enlarged lymph node because of her allergies & immune problem.
Hope you get good news xxx