Hell Knows

On leave today, I've been staying at home for one whole day.
Don't wish to go out, and I talk not more than 10 sentences today?
I woke up on 12 in the noon, and I sleep back 3 hours later.
just recovered from flu, now what? sore throat? headache?
I'm not sick, but I feel damn unwell,
like~ I'm going to bang my head on the wall anytime.

I'm not those who always happy happy joy joy. Happy goes lucky?
So sorry to say that, it doesn't exist in my dictionary.
What happened on me? just like what I type in the the blog title column:

Hell knows.