Wow, this has happened to me as well. The first time was a few years ago but by the time my Dr. appt. came all was back to normal. It comes and goes to varying degrees, but this past summer, it never went back to normal. The left side remained practically double in size to the point that I couldn't wear some shirts because of it. It's as if the right side has become atrophic and isn't changing as much as the other is during the normal cycles of water retention etc, It's really starting to worry me, please do post if you find anything out.