I also hate the "are you okay" thing. The thing that bugs me the most is people ask, but if you really told them, they would give you that "oh, I was just being polite I didn't actually want to know" type of look. It's annoying.
One time recently my husband said, "Why are you walking around looking pissed off?" My response was

because I was in a pretty good mood....
Hope you start to feel even a tiny bit better.