Quoting Angel Mommaa:" A girl I used to work with has OI. She's 34 weeks pregnant, and they just found out her unborn child ... [snip!] ... didn't have any broken bones. I would ask your ob if you could be tested before birth since it can be done Good luck op!!"
the problem with testing of any kind before birth is that they need to put a needle in and get it through all the linings into the baby so therefore, it can cause leakage and potentially harm or even, in worse cases, kill the baby. they won't do this kind of procedure unless it is a matter of life and death in most cases. so in all honesty, i wouldn't even tamper with it until your baby is born my love. it's far too risky when what's wrong with your baby will probably be taken perfectly good care of when you have her!