Help! Cervix dilated to 1 - 33+5 days

Amy • Mom to 4 beautiful girls. 3/3/10, 4/27/14, 4/8/17, 3/7/19.

I’ve never had this issue before. I’ve always started dilating at 37+ weeks. Can someone give me some insight if they’ve been through a similar situation. Came into the doctors today due to intense cervical pressure and a dull lower backache that won’t go away