No; that ABO Rh combination will not affect the pregnancy. Other factors may, of course.
No
yes
yes, there is a chance to have a baby w/ A+
yes
If the mother and father are both type O, the baby cannot be type AB.
then the baby will be O plus, or AB plus , I think .
yes, it is possible.
yes can
Yes
Yes
Yes - and the baby will have a blood type of O.
it is possible but chances are rare.