There's one more possibility. Don't know how old each of you is, but my OB/Gyn told me a long time ago that all women go through a cyclical change sometime in the late 20s or early 30s. Women used to blame it on their pregnancies, but it was actually the fact that the pregnancies took place during those years. It's possible that the changes some of you are experiencing just happened to occur at the very time you started LCing.