Question about Anti D/ O negative blood type

[SarahHewitt]

Hello

does anyone know anything about blood types on pregnancy?
I’m O negative and my first husband was a blood type positive but I’m not sure which one - but it resulted in me having the Anti D injections throughout pregnancy but his blood type must of been one to make having an O negative child possible as my child was ironically born O negative same as my blood type. Now it’s my second marriage and my husband has AB positive (I know I will need Anti D in my second pregnancy too) - but I was looking up blood types and apparently a O negative and AB positive can only result in having a
A / B positive or A / B negative child there is no other blood type that can form from O negative and AB positive mixed together … is that right? And does affect in pregnancy viability?

Why are you worrying about pregnancy viability to do with blood type?

You will need anti d like in your last pregnancy although in some areas they can test during pregnancy to see the baby's blood type.

Yes you are correct- your blood types together can only make an A or B, positive or negative. Shouldn't effect viability in any way, it is just that A and B alleles (parts of a gene) that determine blood type are dominant, and O is recessive so with a parent that has AB as a blood type, the baby will never have an O blood type as either the A or B from that parent will dominate the O. Not sure I've explained it very well but it really makes no real difference and is nothing to worry about.

was looking up blood types and apparently a O negative and AB positive can only result in having a A / B positive or A / B negative child there is no other blood type that can form from O negative and AB positive mixed together … is that right? yes this is correct

And does affect in pregnancy viability? No more than before. Its the - or + that affects pregnancy, not the A, B or O (O really means zero)

Even when my blood results were showing high antibodies no action was taken. Absolutely worst scenario would have been unborn dc having a blood transfusion.. Several dc and never got that far. Try not to worry.

That’s strange as my mum is AB- and I am O-. Wondering what my dad is then….

You should be wondering who your mum is, not your dad.

What? You inherit either Mum’s or Dad’s blood group: there’s no mixing. Of course you can still have a rhesus negative child since that’s your blood group.

Thats not how it works. You inherit from both Mum and Dad.

Actually the worst case scenario is a still birth, or, as I had to have an emergency csection at 32 weeks after failed inutero blood transfusions.

But as PP say, this is nothing to do with the AB or O, it's the rhesus factor (although there are many other antibodies of concern, they are just rarer. I had rhesus antibodies and little c and k.

I'm A negative, my ex was O positive, my son was A positive. So I'm afraid this is wrong.

This is rubbish. I am B- and dh is A+. My kids could be A, B, AB or O and rh+ or rh-. I know they are Rh+ as I had anti d after both were born. They have the highest chance of being AB+

Ok I’ve just read up. Ignore me I’ve been labouring under a misapprehension forever!

An AB+ and O- can’t make any other blood group other than a child with A+ / negative or a B + / negative. It can’t make O etc

I’m only wondering and curios as if my husband had been another blood group there would of been a chance a baby would be same as me O-
but because of him being AB+ this isn’t possible.
i had early 6 week miscarriage and wondered was it anything to do with blood but I don’t think it is ..