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

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Hysterosalpingogram in clean days

17 May, 2013


I have been having difficulty conceiving and am having a hysterosalpingogram done next month during my 7 clean days. There is a possibility of slight bleeding as a result of the procedure. I am worried about becoming niddah as a result of the test and missing my ovulation window. Is there anything that I can do to avoid that (such as wearing dark underwear after the procedure or skipping bedikot)?


We are sorry to hear of your difficulty conceiving.

For procedures that enter the uterus, the size of the instrument that enters is halachically significant. Instruments larger than a certain size render a woman niddah even if there is no bleeding. Opinions as to this size vary. Our site’s rabbinic supervisor, Rav Yehuda Henkin, rules that an instrument with a diameter of less than 19mm does not make a woman niddah. Since a hysterosalpingogram uses a narrower instrument, the procedure itself does not make a woman niddah or invalidate her clean days.

Following the procedure, there may be some brown discharge (from the dye) or even some bleeding (which is usually dam makkah from cervical trauma). External staining may be attributed to dam makkah and disregarded. However, it is necessary to have one acceptable bedikah on day seven of the shivah neki’im, which may be complicated by the procedure.

You should perform bedikot as usual up to and including the morning of the procedure. Following the procedure, you may omit bedikot until any bleeding subsides, taking care to perform a bedikah on day seven.

However, if the procedure is planned for later on in the clean days, you may have to delay your day-seven bedikah (and thus immersion as well) until the bleeding subsides and you are able to get an acceptable bedikah. As long as five days do not pass without a bedikah, your clean days will remain valid. For example, bedikot on days one through five, followed by a final bedikah on day ten would be considered a valid set of seven clean days. If it seems like this delay would cause you to miss your ovulation window, please ask a specific halachic question about how to proceed.

If the procedure is planned for day seven itself, you should perform your morning bedikah prior to the procedure and then omit the afternoon bedikah. In this case, even if you experience staining following the procedure, it may be disregarded and you may still immerse as scheduled.

You may also find it helpful to consult a Yoetzet Halacha Fertility Counselor. (This is a free service, details here.)

Please feel free to get back to us with any further questions.

We wish you much hatzlacha!

This response was updated on 20 October, 2020.

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. All health and health-related information contained within Nishmat's Women's Health & Halacha Web site is intended to be general in nature and should not be used as a substitute for consulting with your health care professional. The advice is intended to offer a basis for individuals to discuss their medical condition with their health care provider but not individual advice. Although every effort is made to ensure that the material within Nishmat's Women's Health & Halacha Web site is accurate and timely, it is provided for the convenience of the Web site user but should not be considered official. Advice for actual medical practice should be obtained from a licensed health care professional.

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