Help need advice

Tayana • Twins coming soon June 25,2016 😁😁
I went to the doctor yesterday for my anatomy scan and they informed me that they will have to monitor my cervix because it's measure in length 27 and it should be 30 or more. They said they have an experiment going on where they will put a rubber band around my cervix it won't harm me or the baby but it's not guaranteed it will work. Is anyone else going through this or had the same problem where they cervix measured smaller.