you are not alone but look at the up side at least they still look the same for you. But me, on the other hand, my son loved my left breast more so it is slightly bigger than my right but now they are both equally saggy.lol. it comes with the territory

Did you breastfeed in the past?  Many moms continue to experience the feeling of milk letdown for years after they have their children.  Even some moms that did not breastfeed.  Milk letdown occurs when the nipple are stimulated.  It can also happen when you hear a baby cry.  This does not mean you will have milk coming out.  You will just feel the sensation and then it will disappear after few moments.  My mom used to get it for years after we were born.