My blood type is o positive, and my husband is a negative. will we have a+/- children, and would that make for high risk pregnancies?

Not high risk.: You will have either o/a, rh+/- offspring. In any case, since you are rh+, fetal anemia should not occur. A remote (1:1000) possibility is mild neonatal hemolytic disease or just jaundice from maternal-fetal ABO incompatibility in case you carry an infant with a blood type to which you have anti-a antibodies. It still does not classify your pregnancy as high risk and you should expect good oucome.

Possible issue: I would not consider an a/o incompatibility issue high risk, but worthy of monitoring. In your lifetime you have likely been sensitized to the proteins on the a blood cells & your antibodies will cross into baby & boost his/her chances of having jaundice.Most do well without rx & some require some special monitoring & help.I can remember only 1 case in 3 decades that gave me any real trouble.

See below: Possible blood types for your children are as follows: a or o. This will not affect your risk of pregnancy. The rhesus type will be + or _. In this case, since you are the positive one, it will have no effect on this or future pregnancies.