# Donating blood and pregnancies

**URL:** <https://boards.straightdope.com/t/donating-blood-and-pregnancies/467610>\
**Category:** Factual Questions\
**Created:** [October 12, 2008, 7:00pm UTC](https://boards.straightdope.com/t/donating-blood-and-pregnancies/467610 "2008-10-12T19:00:36Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![rbroome](https://avatars.discourse-cdn.com/v4/letter/r/838e76/32.png) [@rbroome](https://boards.straightdope.com/u/rbroome)\
**Post date:** [September 17, 2014, 12:15pm UTC](https://boards.straightdope.com/t/donating-blood-and-pregnancies/467610/21 "2014-09-17T12:15:52Z")

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> [@Chronos](#):
>
> Wouldn’t the risk also depend on how many different fathers there were? If you have only one partner, and his antigens are all compatible with yours, then it won’t matter how many times he gets you pregnant. And even if he’s not a perfect match, there’s still a limited number of antigens your children could have. If you have babies by multiple men, though, you could in principle get exposed to any number of antigens.

the questions are intrusive enough as is, asking how many different men have fathered your children seems like a question too far. I’m a guy, so I what do I know, but I still have to tell them I have never been pregnant.

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