Nishmat's Women’s Health and HalachaIn memory of Chaya Mirel bat R' Avraham

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Anticipating induced period

13 April, 2005


I have just begun a five-day run of Prometrium (progesterone) to end an anovulatory 70+ day cycle. My doctor advised me that I should get my period seven to ten days after taking the last Prometrium capsule. I do not have a veset kavua, and I passed all of my most recent onot without becoming niddah.

Am I required to perform any bedikot during that time frame (7-10 days after last pill) to ascertain whether I am niddah? Am I required to separate from my husband (I don't think these are strictly vestot) during that time frame before I actually become niddah, as a precautionary measure? Should I continue to wear dark underwear, and how do I determine what level of spotting would make me niddah?

Thank you so much for your help.


You are not required to perform bedikot or to separate during that time frame.  Even though most women menstruate seven to ten days after finishing the capsule, you have not yet established how your body reacts to it.  You may continue to wear dark underwear.  The general rules of ketamim will apply.  If you stain, you should abstain from relations until you see if the staining continues or becomes a flow. 

Should you experience either hargashah or an actual flow from your body, you would be in niddah.

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