1. A woman who immediately sees blood as a result of intercourse, meaning in the time span it takes for her to get her hand under the pillow or blanket and perform an examination with an eid is prohibited from her husband is permitted to have intercourse 3 times.  If on three consecutive occasions she sees blood and even more so if the blood is on his eid, is prohibited from cohabiting with this husband but rather must get divorced and remarry another person.  If the same thing happens, she divorces him and marries a third man and if she continues to see blood as a result of intercourse she is prohibited from marrying anyone else until she has a test. And there are those who say that we are not experts at determining what is "as a result of intercourse" because we do not know the actual length of time referred to.  Therefore, we consider bleeding to be "as a result of intercourse" if it happened near the time of intercourse we consider it as being "as a result of intercourse" and she is prohibited to her husband.  These three sightings must be consecutive, if they are not she is not prohibited from her husband.  There is no difference if she sees three times at the beginning of her marriage or if she commenced this type of bleeding at a later time.  All of this applies only if the blood is seen close to the time of intercourse; if it is not she is not prohibited to her husband and is permitted to him again after she becomes pure and she is assigned the status of vesses sheaino kavua.
    
2. How does she perform the examination?  She takes a tube (a hollow piece of lead) whose opening is rounded and she inserts it ,along with a cloth, into herself deeply so that it reaches the point of maximum penetration.  If she finds blood on the tip of the pipe it is definitely from the uterus and she is prohibited, and if not, we know that the blood came from the sides and she is permitted. Even in these days we rely on this method.
    
3. If she wishes to perform this test while she is still married to her first husband after the three consecutive bleedings, she is entitled to and she would be permitted to him.  There are opinions that she is prohibited from the first husband from the 3rd time on even if she performs the test.  It is appropriate to rely on the first view, which is towards leniency. If, however, she feels pain and aches during intercourse, according to all opinions she may rely on her test for the first husband.
    
4. If she has intercourse close to the time of her vesses we attribute the blood to her oncoming period and do not call it "as a result of intercourse".
    
5. If she has a wound in her vagina, we attribute the blood she found to the wound.  This all applies for a woman who has a vesses kavua and then she may attribute the blood found not near her vesses time to the wound even if we do not know with certainty that the blood came from the wound.  Similarly, if she does not have a vesses kavua and there is a doubt whether the blood is uterine blood or not, we attribute it to the wound because of a double doubt - first exactly where it is from and, second, if it is uterine blood is the result of a wound or not.  However, if we know with certainty that the blood is from the uterus even though she has a wound there, we cannot attribute the blood to the wound unless we know with certainty that the blood in fact came from the wound.  In any event, if she sees during her vesses or at the 30 day mark, we don't attribute the blood to the wound because if we did, she would never be prohibited to her husband.  Kesamim (spotting) can be attributed to the wound in all cases.
    
6. A woman is trusted to assert that she has a vaginal or uterine wound that the blood is coming from.  Further, if she says "I am certain that this blood is not from the uterus" she is believed and she is pure.
    
7. If she's doing her detailed examination and only finds blood stains in one place on the side, we attribute the blood to a wound that exists at that place.  Certainly this is case if she feels pain during the exam in that particular spot and in all other areas she has no pain.
    
8. If she wishes to be cured she must effect the cure before she sees 3 times "as a result of intercourse", but afterwards, there is a question as to whether she can be helped by the cure.  There are those who permit her if a Jewish doctor tells her that is cured.  If a woman sees that her menstrual blood has stopped as a result of the cure and that fact  is easily discernable we can rely on a non-Jewish doctor as well.
    
9. If she received a sudden fright and a clot of blood was expelled by her and she was cured, she is permitted to her husband.  If she then sees one time "as a result of intercourse" we know with certainty that the earlier injury  or clot has not been cured.  Today we do not rely on this leniency.  However, we do not remove her from her husband after the cure until she has intercourse and returns to her earlier state.
    
10. A woman who sees blood during intercourse is permitted to have intercourse a second time when she becomes pure.  However, we are concerned that the pattern will repeat itself and she must separate from him on the night of her immersion.  We do not however make her separate at the time of the third period because we do suspect a pattern if an event happens only once.  If she sees blood on the night of her immersion during her first intercourse 3 times she has the same status as a woman who saw three consecutive times since it is established that it is impossible for her to immerse herself and engage in intercourse.  If she sees blood on the first instances of intercourse after each of three births or if she saw 3 times after each birth, and between those events she did not see blood as a result of intercourse, there are those who will be lenient and permit her  to her husband.  We attribute the blood to her general state of weakness after giving birth.  Therefore, bleeding after giving birth is similar to bleeding from a wound.  Allt his only applies if she already had intercourse between the various births so that she did engage in permitted relations.  If she saw blood three consecutive times after giving birth, we do not attribute the bleeding to the childbirth, but rather she must make the test with the tube described above.  In any event, whenever she requires this test and if she didn't do it and had intercourse and didn't see blood she is permitted since this intercourse where she didn't see is superior to the test tube.
     
11. A woman who sees blood after intercourse and then a half year later sees again during intercourse she is permitted to her husband because she did not establish a pattern in 3 consecutive cycles.  However, we suspect the last time and when a half year comes around again she is to separate for one onah.  If she establishes a pattern for seeing blood on a fixed schedule that is not monthly, she is permitted to her husband during the times when she does not suspect a return of the bleeding.  She uproots the pattern by going through three cycles and not seeing blood.
     
12. A woman who sees as a result of intercourse 3 times is not permitted to remain with her even if he asserts that he will not have intercourse with her and they must divorce - unless he is prepared to provide for her support through an intermediary and only goes to visit her with witnesses.
     
13. When someone has intercourse with a virgin several times and sees blood as a result of intercourse 3 times may attribute the blood to her "virginal blood" until she has intercourse once without any bleeding.  Then if she sees three times she attains the status of one has a flow as a result of intercourse.  and even if she did not have a break in bleeding, but merely had intercourse with no pain she is considered like every other woman and cannot attribute her bleeding to virginal blood.  Someone whose husband ejaculates blood may attribute her seeing blood to him.
     
14. If a woman has injuries that prevent her from going to mikvah must be divorced from her husband so that he does not annul the mitzvah of having children.