Dear doctor, I am 35 years old and my wife is 29 years old. We got married 2 years ago. My wife got pregnant last year. During her pregnancy she had hyperemesis and other than she was alright. Usg findings were all normal. 1 week after taking the 20 week scan (which was perfectly ok) my wife had spotting following which we took another scan as per doctors advice. It showed that her amniotic fluid index was 17 and otherwise everything including our baby was normal. Following this she was on bed rest and she had blood stained discharge per vaginum. Exactly one week later she had labor pain and was taken to labor. There the scan showed an amniotic fluid index 27 but baby was perfectly ok. She expelled baby on same day which could not survive as it was only 22 weeks. Chromosomal studies showed the baby had no chromosomal anomalies. My wife had no infections during pregnancy and her rbs was normal (82) when checked it earlier during pregnancy and it was 165 when she was in the labor room. Her mother and maternal grandparents have history of diabetes. Mellitus. She is a doctor and had to go through much workload and stress during her pregnancy. What is the reason for polyhydramnios in her case? what should we do to avoid this in her next pregnancy and make it safe?