I’m going to keep this one shorter than usual. Now, I only bring this up because I’ve heard this mentioned by multiple women. I am not making this up.
Guys, just because you grew up on a farm and have helped deliver cows, pigs, goats, dogs, cats, llamas, and bison doesn’t mean you know anything about helping a woman give birth.
Don’t say “don’t worry, darlin’, I’ve pulled dozens of calves out, I know what I’m doin'”.
I’m guessing not a single one of those mama cows needed emotional support. Human women don’t (as far as I’ve heard) ever need to be restrained with a headgate during delivery. And human women can tell you what they’re feeling.
Besides, your role is a bit different. When you’re helping to deliver a farm critter, you’re the “medical staff”. When you’re helping the woman you love birth a baby, you’re her support person. It’s not the same thing.
Finally, before you open your mouth to explain “I’ve been pulling pigs since I was eight”, put yourself in her shoes. Whether you mean it or not, it’ll come across as equating her a pig (or cow, or goat, or whatever). I don’t think she’ll like that.
So, to recap: humans aren’t the same as the farm critters you grew up helping deliver, your role in the birth is going to be much different, and that woman you love won’t like feeling like you’re calling her a cow.
(To end on a bit more positive note, what you’re probably trying to communicate with your farm experience is confidence and competence. Instead of leading with your farm experience, try something like “I’ll be with you all the way through this. You can count on me.” She’ll appreciate that much more!)