What is the impact of O-type blood and O-type blood people getting married on the baby?

Patient's question:

Possible causes of not being pregnant

Doctor's answer:

Medical Analysis: Hello, marrying someone with O-type blood does not affect the baby. Please rest assured.
Advice: If the mother is O-type blood and the father is not, there may be a risk of hemolysis in the baby. However, this can be monitored and controlled with medication.