[Pansy-Mae]

I have one, maybe half an inch in diameter, very palpable on the side of the right breast. It is movable to a degree.

Personally I've never heard of anything like that in relation to PM.
I'm not in any way 'medical' but it could just be a cyst or a lipoma, but then again, it could just possibly, however unlikely, be something worse.
My advice would be to get it checked by a doctor asap. That's standard advice for any unexplained lump in a breast.