Thank you for your query.
Though you have mentioned a lot of things in detail you have not mentioned your weight which can be one of the reasons where you may have a feeling of suffocation.
You mentioned that your x-ray abdomen showed fecal matter. I suggest that you get an ultrasound
of your whole abdomen which will give a better picture of your liver
, gall bladder
and your intestines. In case constipation
is the reason then you need to modify your diet to check constipation. You would like to refer to my article at http://goo.gl/zRm1Q to have a better perspective.
I hope I have answered your query to your satisfaction.
Wishing you all the best.
Rajiv K Khandelwal