hmmmm....
i have been having the same kind of thing (though not quite as intense)...shortness of breath, funny breathing rythms (like when reading out loud to my son or chatting on the phone...i have to take these extra funny breaths!). i do have asthma on occasion but this seems really unrelated ??!!
my accupuncturist said it could be related to my kidneys....hmmmmm....she did a treatment for it and i did notice an improvementm and i do believe in the interconnectedness of our bodies but I didn't quite grasp that exact connection! on the kidney front though...drinking lots of water (which we should all be doing anyway) seems to help. another thing that she (and others) suggested is doing deep breathing excercises...while stretching, bathing, saying prayers or meditating, etc. i have started doing prenatal yoga and i swear i am ridiculous at trying to breath "right" with the stretches. i get all mixed up. but i know that it really isn't about "right" or "wrong". the point is to center and breath deeply, however you need to do it, especially if it is new.
HadhratKhadija...this may be too personal and just say so if it is...but I noticed your name and little Muslim Mama icon...my husband and I are Muslim and I don't know if you do the prayers but one thing I have been doing is reciting them a lot slower and breathing deeper between lines and I think it is helping. My husband is really supportive of going a bit slower when we pray together and he helps me pace it so I remember to breath deeply and not get too short of breath. We also do remembrance practice outloud together sometimes and I think the rythym of saying the Name in recitation helps my breathing. Anyway...just in case those are interesting tips...there they are! Otherwise...please ignore!!!
I hope you find some relief!