Puckering

kb333

Hello. I have a plan to call my OB in the morning but I needed some advice. I am 31 years old, mom of 3, and still breastfeeding my 3rd child. I am heavier on the top, size 38D. I have some excess axillary fat and more so on my right side. I noticed today that there was some puckering where the axillary fat meets the breast. It is there when my arm is relaxed, and it is there when I flex my arm or tighten it. It is not there when I raise my arm. Any thoughts? Should I be concerned? Has this happened to anyone and it was or was not cancer? Thank you.