As with previous posts - that doctor is all kinds of bad names we can't mention here and his story is total bollocks.
I'm o neg and my DH is o pos - my first child is o pos like hubby and my second is o neg like me
Had the anti d's during and after first pregnancy as a precaution and then they did my bloods with DS 6 weeks ago but because he's neg like me didn't have to have any.
At NO STAGE did anyone ever say I couldn't have more children.
Good luck with your pregnancy and any future bubs too