I have been to three Board Certified plastic surgeons for consultations about a BA, and have been measured by two doctors which resulted in two different BWD measurements: one said 11 and 11.5, one said 12.5/13... ??? Now I am confused about sizing. I chose my surgeon already and he is the one who I measured smaller with, but the BWD of 11 seems small compared to other women. How do I know that he is measuring me correctly and that the BWD he got is accurate?