I was told that if it has happened once then it is more likely to happen again. Esp if the placenta places itself in the same place. It's to do with the scaring. All three of my placenta's have been at the front and they think this time it is on the old scaring. They also say operations done to the uterus, even lap. can be contributing factor. Any thanks ladies, still not sure what to put in my b/plan.