I'm with Scott on the psyllium recommendation. I'm not sure what I'd do without it. Well, actually, I do know that I'd be very uncomfortable...butt burn, thin stool, more frequent emptying and hemeroids! I learned this when I was in Cuba and didn't have access to psyllium.
Also, as an aside when I was pregnant and a bit constipated, my doctor told me to stew the prunes to have a better effect. Good luck to your 'lazy' bowel!!