Hello all - I'm just after some advice. I'm going quite crazy with worry and I definitely didn't ask the dr all the questions I now have. I am 42, went to the dr with a lump in my breast. I have since had a mammogram where they found clusters of calcification. I had a magnified mammogram and they were classed as 'uncertain' so I have a biopsy (during mammogram) on Thursday. I'm not sure what to expect at the biopsy and afterwards. I have no idea how often 'uncertain' calcifications turn out to be cancer. Has anyone got any advice? Thanks.