Huge hugs SLC and Bride, for when you bring your little one's ashes home.xx
As for the reason for pPROM in my case it was unknown - there was strepB found when I was swabbed on arrival at hospital (actually I did the swab myself, as they forgot) but my waters had been broken for about 15 hours by then. It was also found in the histology (of the placenta) but there is no way of knowing if the strep was the reason for the break, or if it ascended afterwards, as I didn't deliver till 6 days afterwards. In my case they "suspect" the twin pregnancy caused so much torsion that it either caused the rupture directly, or else it causes a temporary case of IC and allowed the bacteria in, in turn causing the rupture. They will monitor my cervix weekly from 10 weeks next time, if there ever is a next time, just in case and have promised me a cerclage immediately if changes occur. I have never had any Leep or cone biopsy done on my cervix and I have a DD who was born at just about term. I did however have an emergency C/section with my DD and in the process my uterus was torn to the cervix. he told me that when they do a section, it's the cervix they are cutting into, at the top end, he couldn't rule out this being the cause either. From what I've read (which is quite extensive, I went a bit research-mad in my search for answers) nobody really knows the exact aetiology of pPROM. There are known risk factors so it's really a case of trying to eliminate these in the search for possible causes. I don't have all the info to hand, I lent some of it to my midwife and haven't got it back but here's what I can remember as risk factors (remember none of these guarantee pPROm occurring, neither does the absence of them guarantee it not occuring, but they seem to increase the odds):
Smoking
Illegal drug use (mainly cocaine)
Previous surgical trauma to the cervix (causing IC) ie LEEP, Cone biopsy, forced dilitation of the cervix (usually medical termination)
Multiple pregnancy, causing uterine torsion
Irregularly shaped uterus (ie bicornial, septate, etc, not just retro or tilted)
SCH (thrombin in blood is thought to irritate the membrane and possibly cause rupture)
Low socio-economic status (no idea why!)
Chlamidia Infection, Ghonnoreah infection
and I can't remember off the top of my head but I'm sure it said something about women of afro-carribean and hispanic descent being higher risk than caucasians (again, no idea why and it was probably an American study)
BV has also been mentioned a lot as a possible link too.
I'm sorry I don't have links to sources but that's what I can definitely remember.
HTH xxx
ETA: Here's a great link about future care and what you should request: https://www.inkan.se/pprom/pap-guidelines/trans-vaginal-ultrasound/