Patient's question:
On April 5, 2018, we shared a room. On June 8, I found out I was 8 weeks pregnant. Was the conception period after April 5? Mom is type O blood, and Dad is type B blood. Why is the baby type A blood? Could it be caused by hemolysis? Or even if there is hemolysis, it wouldn't be type A blood?Doctor's answer:
From the description you sent, I understand the situation. Your algorithm is correct, but there won't be any more B-type blood. I suggest you have another check-up. The gestational age algorithm is calculated based on the date of the last menstrual period. If a person with O-type blood and B-type blood has a child, the child should be B-type blood. In fact, during pregnancy, as long as you regularly go to the hospital for check-ups and also do the Down syndrome screening well, there won't be too many major problems.