Digestive Enzymes

Hi i won't bore you all with my symptoms all what i've done to try get over my ibs but basically i have ins c and am having trouble at the moment digesting my meals. I eat food and i can feel it sitting in my stomach for about 4 hours afterwards.
Can anyone recommend a good digestive enzyme to take to try relieve this. I have tried bio 6 plus which is a pancreatic enzyme i don't really know the difference in them and digestive enzymes but when trying bio 6 plus for a few weeks i didn't feel any better (although that was about a year ago)

Any help wanted Thanks

A pancreatic enzyme is never enough. I recomend this: http://www.nowfoods.com/Super-Enzymes-90-Tablets.htm

My wife is pregnant, is there a digestive enzyme she can safely take? We haven't been able to find one that says it is safe to take while pregnant.