31 weeks today.

Kimberly
Hubby and I did what the Obgyn recommended, went to the hospital this morning because I couldn't feel the baby move since 24 hours. Turns out baby girl still has a strong heartbeat and movement. The doctor did an exam and told us my cervix is thinned already. Has anyone else experienced this early at 31 weeks? If so when did you deliver? I'm hoping she stays in there till 38 weeks.