hi I know how upset you are feeling. I had breast cancer in 2011 and even though that biopsy was positive , I have had 4 since and they have all been negative. an ultrasound will show alot more and they usually know by that if it's suspicious, so you might get there, have an ultrasound and they might say it's fine. even if you have a biopsy it might be fine. hopefully like I said the ultrasound with clear up any queries they have so no waiting for biopsy results as waiting is horrendous