There is no need for you to marry a partner with the same blood type/grouping as yourself. Blood compatibility has nothing to do with relationship compatibility.
When looking at a blood type, it is not the letter you should be concerned about, but the Rh factor (the positive or negative sign after your blood type letter, example: O + or O-). A woman is at risk when she has a negative Rh factor (example: O-) and her partner has a positive Rh factor (example: O +). This combination can produce a child who is Rh positive. While the mother's and baby's blood systems are separate there are times when the blood from the baby can enter into the mother's system. This can cause the mother to create antibodies against the Rh factor, thus treating an Rh positive baby like an intruder in her body. If this happens the mother is said to be sensitized.
A sensitized mother's body will make antibodies. These antibodies will then attack an Rh positive baby's blood, causing it to breaking down the red blood cells of the baby and anemia will develop. In severe cases this hemolytic disease can cause illness, brain damage and even death.
So, as you can see, your blood type does not matter much, only your Rh factor. Hope this has helped.
Hi I have one question about blood group , my blood group A- nigative what's happened if I marry with diffrint group my think if O+ positive I can marry with this group ? please answer me if i can't what shall i do ?