mumof2 really really hope they're right and it's bladder - but you are right, you know your body and push for all checks you can get. But don't blame yourself one bit, I echo Elasti there are lots of activities that come with being alive and we can't wrap ourselves up in cotton wool for 9months. If you do have an incompetant cervix it is nothing that you caused. hoping and praying for a healthy little one in there and that they can correct all that is needed with a stich or whatever is necessary.
Alyss also thinking of you - I hope everything goes well today, please let us know.
Will be thinking of you both today and have every faith that there will be some positive outcomes - sending all the positive vibes possible in your direction