My Blood Type Is RH Negative

6 Replies
Michele - December 21

I was told by my physician that I might have to get a needle at 26 weeks if my husband's blood type is different? He said that my body would try to fight the baby??? (My mother told me that the doctors informed her of this problem when I was born).


Shannon - December 26

I'm also Rh- and had to have the rhogam injection..I unfortunately miscarried at 8 weeks. They said if my husband is a neg. blood type and I am too, then the shot is not needed. I didnt find that out until AFTER I had it. Good Luck!


Pam - December 27

I'm Rh- too. I had shots with both my kids at 28 weeks and after birth and also after a car accident as trauma can cause blood to pa__s from baby to you. Most will give you the shot whether your partner is negative or not to avoid the question that your partner may not be the Daddy! It is a precaution with first pregnancies but must be given in case you have anymore(intended or not!) as that is when the problems can arise. Its 1 or 2 shots and you do need to have them. Its worth it for peace of mind and does not harm you or the baby in any way. If you do have any type of accident while pregnant please see your doc asap as it is vital you get this shot to ensure you and baby are fine. Best of luck, Pam PS- We are very special us negatives, 15% of the world population but our blood can be given to anyone whereas positives could kill us!


Sarah - January 4

I've had two m/c and I'm wondering if it's because my boyfriend is O- and I'm O+?


Tracey - January 4

I am also RH- and had the rhogam shot at 28 weeks. It's a necessary thing to get and not harmful to you or the baby.


eyebeeablessing2u - January 4

here is some info for you Each person's blood is one of four major types: A, B, AB, or O. Blood types are determined by the types of antigens on the blood cells. Antigens are proteins on the surface of blood cells that can cause a response from the immune system. The Rh factor is a type of protein on the surface of red blood cells. Most people who have the Rh factor are Rh-positive. Those who do not have the Rh factor are Rh-negative. How do I know if I am Rh-negative or Rh-positive? As part of your prenatal care, you will have blood tests to find out your blood type. If your blood lacks the Rh antigen, it is called Rh-negative. If it has the antigen, it is called Rh-positive. When the mother is Rh-negative and the father is Rh-positive, the fetus can inherit the Rh factor from the father. This makes the fetus Rh-positive too. Problems can arise when the fetus's blood has the Rh factor and the mother's blood does not. What may happen if I am Rh-negative and pregnant? If you are Rh-negative, you may develop antibodies to an Rh-positive baby. If a small amount of the baby's blood mixes with your blood, which often happens, your body may respond as if it were allergic to the baby. Your body may make antibodies to the Rh antigens in the baby's blood. This means you have become sensitized and your antibodies can cross the placenta and attack your baby's blood. They break down the fetus's red blood cells and produce anemia (the blood has a low number of red blood cells). This condition is called hemolytic disease or hemolytic anemia. It can become severe enough to cause serious illness, brain damage, or even death in the fetus or newborn. Sensitization can occur any time the fetus's blood mixes with the mother's blood. It can occur if an Rh-negative woman has had: A miscarriage An induced abortion or menstrual extraction An ectopic pregnancy Chorionic villus sampling A blood transfusion How can problems be prevented? A blood test can provide you with your blood type and Rh factor. Antibody screen is another blood test that can show if an Rh-negative woman has developed antibodies to Rh-positive blood. An injection or Rh immunoglobulin (RhIg), a blood product that can prevent sensitization of an Rh-negative mother. When is RhIg Used? RhIg is used during pregnancy and after delivery: If a woman with Rh-negative blood has not been sensitized, her doctor may suggest that she receive RhIg around the 28th week of pregnancy to prevent sensitization for the rest of pregnancy. If the baby is born with Rh-positive blood, the mother should be given another dose of RhIg to prevent her from making antibodies to the Rh-positive cells she may have received from their baby before and during delivery. The treatment of RhIg is only good for the pregnancy in which it is given. Each pregnancy and delivery of an Rh-positive child requires repeat doses of RhIg. Rh-negative women should also receive treatment after any miscarriage, ectopic pregnancy, or induced abortion to prevent any chance of the woman developing antibodies that would attack a future Rh-positive baby. What are some other reasons RhIg may be given? If and when an amniocentesis is done, fetal Rh-positive red blood cells could mix with a mother's Rh-negative blood. This would cause her to produce antibodies, therefore making it necessary for RhIg to be given. An Rh-negative mother may receive RhIg after a birth even if she decides to have her fallopian tubes tied and cut to prevent future pregnancies for the following reasons: The woman may decide later to try to have the sterilization reversed. There is a slight chance that the sterilization may fail to prevent pregnancy. In case there is a need for a blood transfusion in the future, the treatment will prevent her from developing antibodies. What happens if antibodies develop? Once a woman develops antibodies, RhIg treatment does not help. A mother who is Rh sensitized will be checked during her pregnancy to see if the fetus is developing the condition. The baby may be delivered on time, followed by a blood transfusion for the baby that will replace the diseased blood cells with healthy blood. For more severe cases, the baby may be delivered early or given transfusions while in the mother's uterus. How common is an Rh factor negative? More than 85% of people are Rh-positive. The Rh factor does not affect a person's general health. Problems can occur during pregnancy when the baby's blood has the Rh factor and the mother's blood does not, however it can be prevented in most cases with the medication called immunoglobulin (RhIg).


Pam - January 5

For Sarah- I would very much doubt that the blood types would cause you to miscarry. My mum is - and my dad is positive and I am - and my husband is positive and I've had 2 healthy boys. It is possible you are just unlucky or maybe your doc can run some other tests to find out the reason you have miscarried. I recently miscarried my 3rd and it was put down as one of those things that happen. Don't give up hope, my cousin's wife had 5 or 6 miscarriages before having her 2 kids so it does prove it can all work out in the end. Good luck.



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