Hah, my suggestion would be the exact opposite of dichotomymom's -- to ease your concerns and stay realistic, DON'T talk to your OB, especially not about chickens
There is a very strong tendency (oddly mostly just in the US and to a lesser extent Canada, not, for instance, nearly so much in the UK or Europe) for doctors to view pregnancy as something abnormal, unusual and unlikely to turn out properly unless you seal yourself into a bubble. As opposed to, you know, pregancy being something that women have done, for hundreds of thousands of years, mostly without any ob/gyns around at all, with surprisingly high success rate
And my observation is that doctors usually regard animals of any kind as being viciously dangerous cesspools of deathly germs with no redeeming value. How many Drs have told people to get rid of their cats or dogs just because they're having a baby? As if that's something a doctor should get a vote on. Harrumph
Anyhow, wash your hands well after handling chickens, that's about it. Honest. Rare risks like listeria or histoplasmosis are EXCEEDINGLY EXCEEDINGLY rare and your chances of getting them from something else are far higher (although still exceedingly small) than getting them from chickens.
If you're still concerned, do a buncha reading and educate yourself about different relative risks, and make YOUR OWN educated decision. It's not your ob/gyn's pregnancy, it's YOURS
And, congratulations!!!!!!
Pat (4 pregnancies, ended up with 2 kids, BIG advocate of midwives
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