Hi..the water in the morning will only put pressure in the stomach and send messages that will help trigger the download in the sigmoid to the rectum.
If one has inflammation in the rectum...it won't matter if there's stool to empty...or if there's mucus or blood, that will be expelled if it hits the inflamed or spasming area..however many times it'll take before the rectum's satisfied and stops spasming to be quiet.
Antispasmodics can help the spasming and in turn help lessen some of the bms up to a point.
Again, let me stress the importance of using rectal meds.
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