Breasts growing then shrinking

Alexis • Fri, Oct 12

This has been happening for almost 5 months where my breast will grow rather significantly and feel extremely heavy but then immediately shrink a couple days before my period? I’m not pregnant and I’ve been checked for breast cancer. I was just wondering if something like this happens to anyone else?? (Also I’ve been on birth control pills since I was 15 and I’m 22 now if that helps any)