A companion to the PIO episode. Answer two questions about your frozen transfer to see why your clinic chose the progesterone plan it did.
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It isn't “are shots better than vaginal progesterone?” It's “is my body making progesterone on its own?” In an ovulatory cycle the corpus luteum makes it. In a programmed cycle there is no ovulation, no corpus luteum — so every bit of progesterone has to come from medication.
Is my cycle programmed or ovulatory/modified natural?
Which progesterone route am I on, and why this one for this cycle type?
Will you check a progesterone blood level — and how do you interpret it with my route?
Am I a candidate for fewer injections or a modified natural cycle?
Educational only. Never change, skip, or stop progesterone on your own. Doses and routes are set by your clinic's protocol. This tool explains the logic from the episode — it doesn't prescribe.