Cerclage fail at 21w5d!

CB15

At 19w they saw my cervix was short and funneling at 9mm and emergency cerclage was placed. At 20w checkup the cervix did so much better and length went up to 27mm. Now on 21w5d they noticed that cervix dilated 2cm!! I am clueless as i was completely on bedrest. Any words of encouragement and hope?! Please pray for me and my baby boy!