I found a lump on my left waistline in the fatty tissue . If I push on it I can feel it and so can others. Probably about the size of a fifty cent piece. If I was to put my hands on my waste it is about in the middle of my hand in proximity. At first I thought it was just a sore spot as I carry my little one on my left side but then I could feel the lump. I have an appt to see my doctor on the 14th but was wondering if this is common.