Sorry for your loss. I too had a similar incident and will always wonder if AO was responsible. I had a beautiful baby girl born who looked "perfect" on the outside." She died within 1 day due to a rare deformity called "Diaphragmatic Hernia." This is when there is a pinhole in the diaphragm and her intestines came through the pinhole pushing her lung over into her heart. Consequently her lungs were not developed well enough. It was 99% fatal back then. Nowadays - they can operate while the baby is still in the womb. Nobody saw it on any "scan" although they should have. Like you - I'll always wonder if AO was the cause. I've not had anything in family history such as this.