question: HI...I was diagnosed with rectal cancer in 2010...had surgery to remove mass...lived with a colostomy for a year, which was reversed a year ago...I had chemo and radiation with the original diagnosis...ever since being reconnected my bowel habits have been abnormal...going from diarrhea to constipation...figured it was my body trying to readjust...and also figured there was damage done by not only the surgeries but from radiation.  For the past few days I have been mainly constipated with very small bowel movement several times a day...but now they contain a certain amount of mucous...should I be concerned?  I am again on chemo...so I know that messes with my system.