Re: Enema not working...?
It appears to me that either the end of the enema tip or tube was pressing up against an impacted mass of stool, or perhaps against the wall of the rectum/sigmoid. It's also possible that you were tense and your colon was contracting and developing a negative pressure that was greater than the gravity inflow pressure.
Try raising the height of the bag to 4 feet, but make sure that you can work the shutoff while you are lying in the tub. Make sure that the water is a few degrees above body temperature to relax the colon (103 F at prep time).
Release the shutoff and allow some water to flow. You should feel the warmth of the inflow. Clamp off the shutoff and wait 10-30 seconds and then release it and let in another few ounces. Repeat this alternating sequence of allowing a few
ounces in at a time and then pausing, until you have taken the desired amount.
If you are using plain water it's best not to retain the enema for more than a minute or two before carefully getting up and out of the tub and on to the toilet to eliminate. A saline solution can safely be retained a little longer (5-15 minutes).
Here are a few links that may prove helpful:
http://valerie_cct.tripod.com/enemas.html
http://www.iquestsight.com/enema.html