Stage 2A Patient
I suggest getting a new doctor and demanding an MRI. I found my lump during a monthly self exam. I went to my gynecologist and then was referred to get a mammogram. My lump showed up a lot better on an MRI, then I got a biopsy on the mass. It was 5 cm!!! It was there for a very long time before I even caught it. And, I don't have any family history...but, that doesn't seem to matter.
I would keep pushing until you get some answers. It's sad but you do have to be your own health advocate. Do the research and find a doctor that will help you. You are worth it!!!