Hello, I am/was 8 weeks 5 days pregnant. Today morning my doc said its blighted ovum and asked to terminate. I also had a missed abortion 8 months back. I was taking progesterone, ecosprin and folvite tabs. My questions are : 1. Why does it happen? How can I ensure it doesn't happen again. 2. Is it possible to conceive naturally and deliver healthy baby at 38. 3. Is it advisable to wait for few days and see if heartbeat comes or should I terminate immediately? Thank you.