Cervical dilation at 28 weeks of pregnancy is a serious condition that may increase the risk of preterm labour. You should seek immediate medical attention at a hospital. Depending on your condition, your doctor may advise strict bed rest, medications called tocolytics to prevent contractions, and corticosteroids to help the baby?s lungs mature. In some cases, a procedure called a cervical cerclage may be recommended to help keep the cervix closed.