No yes you can have a child with type O from Type A mom and Type A dad, if both parents carrier the recessive O type allele. In this case there is a 25% chance of having a type O child. How do I know...
in your question you didn't mention what id the Rh type for both parents. but anyway for a child to be if father is Rh+ mother Rh+ kids will be all Rh+ and with low percentage reaches to 25% to have...