1,085. Bleeding Between the Chupah and Yichud

157:2 If the wedding was put on hold for some reason but then they agreed to go ahead with it, even though she already counted the seven clean days, she must do so again because of a new possibility that there was a drop of blood caused by all the stress. Even if she checked herself every day in the interim, it makes no difference. If there was no firm postponement, just a delay in agreeing on the terms of the dowry, and because of this the wedding was delayed until they agreed, or if they voluntarily pushed off the wedding from the original date and set a different date in its place, they should ask a Torah authority if the seven clean days she already counted are still effective for her. If they argued at the time of the wedding and she got engaged to someone else in his place, it's clear that she cannot rely upon the seven clean days that she counted with a different groom in mind. Even if she reconciles and goes back to the first fiance, those original seven clean days are of no consequence. Since she put him out of her mind, she must count again.

157:3 A man must be careful not to marry a woman until she has been purified from her ritual uncleanliness. If time is short and they must get married while she is still unclean, or if she happened to get her period after the wedding ceremony before they could consummate the marriage, they should not be alone without supervision until she goes to the mikvah. The practice is to get a young boy to be with the groom and a young girl to be with the bride. The couple should not be alone, even by day, without the boy or girl. These children should be old enough to understand what their job is but not so old that they have sexual urges. It makes no difference if it is the first marriage or a subsequent marriage for either the bride or the groom; this law applies so long as this couple has not yet been intimate together.