Like happynifer said...Not a problem. Your baby will have A+, B+, or AB+ blood and that is normal. If you had negative blood, there is a shot that your doctor would give you so your body wouldn't attack your baby at birth. Since you have positive blood, you never need to worry about having that.
nope. happens all the time.
the problem is if mom is negative and baby is positive-then you need to be treated to keep your antibodies from attacking the baby at birth.