Hi, I have done my scanning at 12th week. My cervix measure 3.8 cm, & we have done cervical stciching on 12th week, could you please let me know what is the normal cervix at 12 weeks would our cervical stich works?& we have prescribed proluton depot weekly once, & daily 20 units of evaparin inj, how this proluton depot & evaparin inj help us to get a stronger cervix & avoid miscarriages. Thank you.