Went to obg yesterday im 23 weeks and I'm having a baby girl. It was d…

Went to obg yesterday im 23 weeks and I'm having a baby girl. It was discovered that the baby's head is now situated in the cervix like ready for birth. Now that's dangerous since it's too early. She suggested I do a cervix stitch but it's risky or take pills to stop the cervix from opening. Has anyone had this problem? If it happens the cervix opens and give birth will the baby live? I'm so stressed ?