Progesterone pessary.

For those who took vaginal progesterone after a previous late miscarriage, can I ask what dosage and how long you took for? I’ve had mixed information from my consultant. He said cyclogest 400mg as soon as I’m pregnant after my miscarriage for future pregnancies. Now I’m pregnant and have been taking cyclogest a few weeks (I’m 8 weeks) he’s saying I should take ultrogestran from 16 weeks but can take before if I want. My miscarriage was at 16 weeks so it makes no sense why I would take that late?