You may have not inserted the catheter quite enough, so that at least one of the eyelet holes at the end of the catheter is inside the bladder. Slowly and smoothly push the catheter in a little further, an inch or 2-3 centimeters at a time. Male catheter users should feel an increase in pressure required as the catheter passes the prostate and sphincter. In rare cases there may be a blockage of the catheter eyelets. Remove the catheter and check there is nothing to prevent urine flowing through the catheter. Then take a new catheter and start the process again.
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