Hi, A thinning of the cervix or a cervical incompetence can increase the risk of premature delivery. The cervix is at the lower part of the uterus. During labor, it opens up for the fetus to go through the birth canal to be born. If the cervix is weak or shortened, it may begin to open too soon, leading to premature delivery. However, there are treatments available that can help prevent premature delivery in cases of cervical incompetence. One of the most common treatments is the use of progesterone injections, like the Proluton Depot injection that your doctor recommended. Progesterone is a hormone that helps maintain the pregnancy and prevent the cervix from opening too soon. In addition to progesterone injections, your doctor may recommend other interventions such as bed rest, cervical cerclage (a surgical procedure to stitch the cervix closed), or close monitoring of your pregnancy. It is important to follow your doctor s recommendations and attend all scheduled appointments to monitor your pregnancy and address any potential issues. With proper medical care and monitoring, the chances of a successful pregnancy and healthy delivery can be increased. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Priyanka, General & Family Physician