Shalom! I am a mikvah lady and many women turn to me with questions. Recently, a pregnant woman asked me to clarify the following situation: She had experienced some uterine bleeding and her doctor told her that it was placental bleeding and therefore she shouldn't be considered niddah (this doctor has many frum patients; I don't know if he himself is observant). I called a rabbi for her and he said she was niddah and needed to count seven clean days and immerse in the mikveh, which she did. Now I feel bad that perhaps this rabbi was unfamiliar with the medical reality and perhaps she didn't, in fact, need to consider herself niddah.
Thank you for your question.
There is a concept in halakha called "dam makkah", literally blood from an injury, which does not cause niddah status. Thus, for example, if a woman knows that she has a scratch on the vaginal wall that is bleeding, in most cases she can ignore blood that she sees. This is even applicable, in the opinion of many authorities, to an injury within the uterus. If we know that her bleeding comes from a cut, such as from a medical procedure, we can usually ascribe any vaginal bleeding to the injury and she will not become niddah. HOWEVER, as the rules involved are complicated, and even small variations can have major halachic implications, every situation should be individually addressed with a rabbi or yoetzet.
The doctor in your story probably based himself upon the idea of "dam makkah." However, if the uterine bleeding is caused by natural internal factors such a separation of the placenta and not by a known injury, we would NOT apply the concept of dam makkah. This is especially true in cases such as this, where we don't have instruments sophisticated enough to determine the exact cause of spontaneous bleeding. It is for this reason that women (and physicians) should understand the boundaries of the doctor's expertise and the rabbi's. We fully rely upon physicians for medical information about a given situation. However, they should refrain from drawing halachic conclusions for their patients based upon medical facts. Women should also be aware of this and should not rely upon their doctors for psak halacha.
This internet service does not preclude, override or replace the psak of any rabbinical authority. It is the responsibility of the questioner to inform us of any previous consultation or ruling. As even slight variation in circumstances may have Halachic consequences, views expressed concerning one case may not be applied to other, seemingly similar cases.
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