There have been postings on Medhelp where a total colectomy has been suggested as a treatment of last resort for cases where constipation remained unaffected by each and every possible traditional remedy. I am not suggesting that you rush into this - and certainly you should try a very high fibre diet as suggested by Calgal. Include in your diet raw vegetables, raw fruit, preparations including organic oats and organic bran etc etc.
If nothing works and you wish to explore the total colectomy option then:-
a) take more professional advice
and
b) in order to assist with your decision, you may like to read my own experiences of a total colectomy which I posted on Medhelp in response to another Medhelp patient on:-
http://www.medhelp.org/posts/show/523166
regards
Morecambe