My Saanen doe Sugar is my star milker. She has great handles, wonderful orafice, and milks down easily. However, during my second milking today I noticed that the front portion of both udders were lumpy. She is still nursing her son, but he is drinking less as I get ready to wean him. The lumps were the same size and in the same location. Generally her udder is butter soft when she milks down except when I KNOW she's holding back for her son. Is there any other reason she would have a lumpy udder?