Hi. I am 28 and had a breast sonogram done and am waiting for the results but I m nervous. During the sonogram I noticed a round shape on the monitor where I have a lump under my left armpit. I also noticed a dark cigar shape where the breast meets the.arm pit. When the sonogram was finished the tech brought tje radioligist in. The radiologist asked if I was breast feeding. I told her no and she said then we are good and left. What ciuld this mean? Does it sound like something to worry about?