How long have you been taking the metamucil? It can take time before you notice improvements with it. I've been taking fibre supplements daily for the last 5 yrs and once my system adjusted when I first started taking them (3 months with excess bloating and gas) then I saw lots of major improvements with my CD and IBS (irritable bowel syndrome), less frequency, firm stools, less mucus, no more bloating and very little gas and able to tolerate eating fibreous foods without getting all gassy and bloated.
Are you eating large meals? Do you chew your food a lot before you swallow? What's your diet consist of?
My bum is broken....there's a big crack down the middle of it! LOL :)