Hi - The point of all diagnostic screening is to discover just what's causing the lump(s) you feel; so I'd imagine that, since the mammogram and ultrasound are inconclusive, the surgeon will discuss next steps with you, which might include a biopsy, or perhaps an MRI. Rest assured, they won't give up till they nail down what these lumps are - and luckily, there's a much greater chance they're fibrocystic change, or some other benign breast condition, not cancer. Statistically speaking, about 85% of biopsies show no problem; so even if you get that far, the numbers are in your favor. And don't worry about waiting 10 days; even if this is cancer, breast cancer is generally very slow growing, and this type of wait is typical. Good luck - hope things go well for you. PJH