Congrats! O+ is the most common blood type, which is good because it's easy to get if you need it! They're right too, it's almost universal, you can give your blood to any blood type that is a +, but you can only receive the O's (O- is the universal donor, AB- is the universal recipient). SInce you are positive that means you won't need the Rhogam shot, yay! I'm an O+ too and so glad I didn't need the shot. Congrats on baby!