Did the tech and/or radiologist explain why the lump that the tech actually felt didn't show up on the exam? Is is just that your breast tissue is lumpy? Depending on the explanation, I would get a second opinion. Even if you have to pay for another U/S out of pocket, I think it would be worth it. Also, I would ask for your GP or OB/GYN to refer you to a specialist. I have a history of breast cancer in my family (my mother was 34 when she was diagnosed) and my doctors refer me to the "big guns" any time they suspect anything.

Keep us posted.

Kate