My advice to you is to get a biopsy now. I had already had cancer in the right breast 11 years before (lumpectomy in right breast) and something was noticed on my mamo my in the left breast. I immediately went to my surgeon and he sent me for an MRI which came birads 3...go back in 6 months. I followed their directions and went for a second MRI in 6 months and it said birads 2. So I was told to get another mamo in 6 months and go from there. I insisted on a biopsy and was able to get one within a week. The biopsy showed that I had invasive duct all carcinoma. It was caught very early, but I suspect it became invasive during that wait. The fact is that I was misdiagnosed both times. The same radiologist read both MRIs....he teaches at a medical school too! Get a biopsy now. Waiting can really be a game changer. If I had kept on waiting, I could be dead now.