welcome to Health care magic.
1.First thing it may take little more time to conceive than regular time, post ovarian operation.
2.And
hormonal thing also need to be monitored.
3.Hormonal imbalance do cause early abortions, so you need to get a regular monitoring your hormonal status.
4.Multiple
ultrasound scans, early , NT scan , Anomaly, and regular in travel growth scans for fetal wellbeing.
5.At the time of early scan, remind your doctor / sinologist about your history , so that the free fluid , recurrence can be monitored.
Hope it helps you. Wish you a good health.
Anything to ask ? do not hesitate. Thank you.