WOMEN'S HEALTH FORUM: My question concerns breast size. Specifically, I've read that it's normal to have one breast bigger than the other one, but how common is that? I have one breast slightly bigger than the other, and the nipples are shaped slightly differently. Is this normal? I've had mammograms (I'm 37) and they were fine, and I don't feel any unusual lumps (other than the normal ones). I was just at the ob/gyn in December and he did a breast exam and said everything was fine. I'm wondering if my new birth control pill (it has more estrogen and more progestin than the other one) is doing this, or maybe it was always like this, and I never noticed.Do you have uneven breast sizes?!