not feeling well, don't feel well?

moon72961. I'm not feeling well (today).2. I don't feel well (today). Q) Is there any difference in meaning between #1 and #2?

Not really. #1 perhaps holds out greater hope for a recovery later today.

moon7296As far as I see them, #1 means "I" am not okay physically: headache, stomachache etc.

That is not a difference betwee

I'm sorry to ask after you answered weeks back.

Q1) I was wondering if "today" is added to #2, does it still sound okay like #1?

Q2) Do #1 and #2 always mean "I" feel not good physically and not mentally?
In Korean, we accept those meaning as not well mentally, but English is not, I think.

You don't say like #1 and #2 if you want to say you're not well mentally

moon72961) I was wondering if "today" is added to #2, does it still sound okay like #1?

Yes, that is fine and common. We commonly use 'fell well/bad/etc' in both simple and continuous.

moon7296Q2) Do #1 and #2 always mean "I" feel not good physically and not mentally?

It is always physically unless context shows specificall