Hello, in the past week i notice my left breast being smaller than my right breast, and also my left nipple being inverted when I sleep, but upon simulation it rises, even my right nipple is flat but not inverted. As per the size of my breast i have felt it was asymmetry but not sure how much, i have also lost few arm fat in the left side than right. Should I be concerned? It's Been very scary and worried it's breast cancer.