Hi Doctor, Our gynec has prescribed us to do a Caridiac Anomaly scan between 24 to 28 week. We did at 24 week + 6 days. Everything was normal except Cervical length which was measured as 2.8 cms. This was a abdominal scan. Doctor then advised for Duvadilan retard 40mg twice a day as we were at the risk of pre term birth baby. My wife has not felt any contraction or abdominal pain till now. She is now 30 weeks pregnant.She is on complete rest. I would like know how serious is cervical length 2.8 cms. Normally how long pregnancy goes for woman having 2.8 cms and on duvadilan retard. Please advise.