[Grammar] have done or have been doing or both are OK ???

[sunrose8]

A:Why are you often late for class recently?
B:I am sorry,I haven't felt very well lately. OR I am sorry,I haven't been feeling very well lately.???

Which one is correct? For me,They are both correct on grammar.What's the different between them?

Please help me out.Thx

 

[MikeNewYork]

They have the same meaning.

 

[Tdol]

They are both correct, but I would be more likely to use been feeling.

 

[sunrose8]

They have the same meaning.

Thanks a lot. sometimes English grammar is very subtle

 

[Rover_KE]

Thanks a lot. Sometimes English grammar is very subtle.

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[sunrose8]

A:Why are you often late for class recently?
B:I am sorry,I haven't felt very well lately. OR I am sorry,I haven't been feeling very well lately.???

Which one is correct? For me,They are both correct on grammar.What's the different between them?

Please help me out.Thx

After referring for some Grammar books(Grammar in Use),It looks like I have got the answer to my question and I would like to share it.
When we talk about situations (general characteristics or circumstances) that exist until the present we can use either present perfect(have done) or present perfect continuous(have been doing). However, the subtle difference between them is:
Present perfect continuous emphasises the activity of an action while present perfect emphasizes the state of an action.
For example: We have been looking forward to this holiday for ages( or we have looked forward to...)present perfect continuous emphasizes a mental process;present perfect emphasize a mental state.