this is a late reply so sorry. But i experienced the same thing. I was on Orth cyclen for 5 years then about 8 months ago started getting severe breast pain and swelling for 1 week before my period every month. I went to my doc and she said it was likely that my body was going through some changes as it naturally does throughout your life so it's normal that i may react differently to a pill based on chemical changes. She put me on ortho lo and I have had breakthrough bleeding for the first time ever - so annoyed!!!