Abdomen pain and colon trouble, wanted to take a saline laxative to try to get it all out. If I have something serious and unknown could this harm me?

Anything possible. Would suggest that you see a GI doctor. Since you are close to downtown louisville there is a wide range of choices of truly excellent physicians in this field available. Also several in southern indiana at clark and floyd memorial hospitals. Do not treat yourself until you know what is going on. Hope this is mild and you get better soon. Good luck.