With advice from this thread, I am getting used to have the short breath, or rather ultra short sudden sigh!.
Thank you, yes it was helpful even though it is not perfect. At least, when I see the interpretation, i can get a feel of "sense of direction" that I should be looking for.
It is a bit comfort to know it will go away one day! Well, yeah another expectation!. The funny thing is, when it is not there, i suddenly start looking for it now , "oh, the sigh did not come yet!"