I have periodically a brown discharge which seems to come from my bladder and looks like excrement.  It can appear without warning and there is no pain.  Also I have air coming out like a popping sound. which lasts a couple of days.Had a rectal examination but this showed nothing.Had a hysterectomy over 30 years ago.  Was in an accident  a year ago and hurt my stomach and ribs but all I had were bruises.

Its becoming a problem especially on holiday as I can't go swimming etc  Also suffer from severe back pain in my lower back