The standard tests performed in a prenatal visit do not make a woman niddah. If you are concerned about discharge appearing on a vaginal ultrasound probe, it is permissible to ask the doctor or technician not to look for discharge on the probe. See here for further information.

Usually, a woman observes all her regular veset days the first month of her pregnancy. However, there is room to be lenient once a woman has a positive pregnancy test. If your appointment creates concerns regarding a bedikah on your onat haveset, then you may omit the bedikah, while still refraining from relations.

As always, you may wear a colored undergarment or a pantiliner on your veset day, which would help avoid questions with staining.

Please be in touch if you have any further questions.

We have some appropriate books listed on our website. You may also be interested in reviewing our relevant articles on pregnancy, childbirth, postpartum, and breastfeeding. The best gift you can give your child is a mother who loves God, her husband, and herself. Working on developing and enhancing those three relationships is a lifetime project, but a lot can be accomplished over nine months. BeSha’ah tovah!

This response was updated on 21 December, 2025.