Diverticulitis 2

Forgot to say, had 13 polyps removed 2008 and had a flare up 1-6-10, was inflamed and was on antibiotics for 10 days, and told to eat more fiber.  Cannot afford to see neurologist, so iI am hoping to eat fiber and do probiotics and get regulated on my own, please help me do this.  Eating Fiber One bars and cereal and a metamucil type mix each day, what else is there and what am I supposed to expect week to week?  Also drinking water all day, atleast 6-8 gasses a day.  Not eating popcorn or hard nuts.  Eating lots of greens and geewhiz what else can I do?