It's probably fine if the package was still sealed... Dairy is pasteurized. Also there's no real regulation to the expiration dates, it's really just a best-by date. Unless it tasted funny, I'm sure you'll be okay.

If it tasted fine, smelled fine, and wasn't weird colors, it was fine. That stuff has so many preservatives in it.

Meh. We once had 10 year old ketchup on burgers. It tasted fine, was just a bit browner than usual.

It was probably sterile by then. All the mold, fungi and other microbes grew old and died before you ate it.

How do you pull out cream cheese that's been in your fridge over 3 years and not know it's bad?

I have Gatorades in my fridge that are a year and half old. Expiration dates are suggestive and as long as it doesn't taste, look, or smell funny you should be good.