Lump in my baby's breast

My daughter is 7 months old and I recently found a lump on the right side of her breast area. I'm doing my best not to panic (She goes to the doctor tomorrow) but Google has made its way into my life once again. According to Google it's normal for newborns to have lumps in their nipple area but my baby is 7 months!! Has any parent experienced this with older babies (6 months+) if so what was your experience and LO results?