Hi.....do you have UC? Have you been diagnosed with any gastro problems?
Welcome to the forum.
What meds are you on at this time?
Green poo can mean a few things...just found this that might help:
http://altmedicine.about.com/od/gettingdiagnosed/a/green_stools.htm
The long/stringy .... do you mean pencil thin stools? That could be IBS, tight sphincter during bms, rectal inflammation, stress.....
Can you give a bit more information and maybe make a signature that includes some so that we don't keep asking you the same info....
quincy