Connective tissue which allows unusual flexibility is not always a good thing! The first thing I knew about having a uterine prolapse was the feeling I was giving birth to a tennis ball, and having no idea what was going on. It isn’t life-threatening, but one of the myriad symptoms possible with this disease which cause discomfort and distress.
It affects various logistics of going to the loo, and sometimes I have to lie down until it falls back into place. It happened to me after a particularly difficult bout of bowel problems where I spent too long enthroned. For anyone with EDS reading this: don’t sit for long times on the loo if you can at all avoid it, and do regular pelvic floor exercises.