I think u should be fine, if something was wrong with it u will either throw it up and have diarrhea. Baby and body won't digest something that isn't good to well.
Was it frozen before you cooked it?
If you're not sick or having diarrhea you're fine! Expiration dates are often marked early as to avoid potential law suits. They always give themselves a grace period. Don't stress, I'm sure you'll be just fine :)
If it didn't taste bad and was fully cooked, you're probably fine.
I'm not medically educated but unless you are sick then I think you'll be ok. But IDK if pork is paracidic only when raw? That's what I THINK I know. Maybe Google facts on expired pork. And the length it was expired.