1,084. Bleeding During Intimacy

156:3 If woman feels her period arrive during relations, she must immediately inform her husband. He should not withdraw while still physically aroused as this also gives him pleasure. Rather, he should support himself on his hands and knees and fill himself with dread that this sin has come upon him. When his arousal subsides, he withdraws. He should then consult with a Torah authority about how to atone.

157:1 A woman who is preparing for her wedding must count seven clean days even if she has never yet had a period or has already stopped having her period. In any case, we consider the possibility that her excitement would cause there to be a drop of blood that got lost. Therefore she is treated like one who had a full-fledged period. After counting the seven clean days, she must check herself every day until she goes to the mikvah, as well after going to the mikvah until the relations of the wedding night.