I, too, find the idea that breastfeeding hormones "relax" the uterus a bit puzzling. Pregnancy hormones, definitely, but why bfg? Especially 2 years down the line. Was she doing any kegels in the meantime? That is quite often a first-line recommendation for toning up the pelvic floor when prolapse is suspected, and could also account for the "tightening". -Lisa Lisa A. Marasco, IBCLC International Board Certified Lactation Consultant [log in to unmask] [log in to unmask]