when did you stop progesterone?

EC
My doctor had me start progesterone tabs when I found out I was pregnant this time,
Because I have history of miscarriage. Initially she mentioned stopping around 12 weeks, but it's giving me peace of mind and I am so nervous to stop. If you've taken progesterone during pregnancy for this reason, when did they have you stop? I have an appointment next week at 12w6d and I will ask her then.