Will progesterone pills prevent miscarriage tissue?

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Hey

I just found out that i miscarried. But honeslty i havnt had any heavy bleeding beside light bleeding. There was nothing on ultrasound at 10 weeks. My hcg are 154. I had been taking progesterone since may 4. My obgyn told me to stop taking them. Has the progesterone pill stop the miscarriage tissue to leave my body? I wont be taking them from today. Has anyone gone through this before? Any advice?