Hello doctor my cervical length at 12 weeks was 2.8 cm. After that I did tvs at 16 weeks .at that time it was 3.0 cm. My doctor didn't prescribed me for cerlage. Only he has given dhupaston 3 times daily with folic acid and iron and calcium tablets. I know few people who have done cerlage for 3.2 cm also. But in my condition my doctor told cervical length is normal and no need any cerlage. Do I need to go for cerlage for 3 cm cervical length?