What was your diet like before? Why did you decide to try Primal? Is it purely to fix your digestive issues?
One of the women here wrote a fantastic thread about how she healed her gut and cured her IBS. She did it by eating in line with the Perfect Health Diet, which is like Primal but higher in starches. I don't know if this is your issue but it may be worth reading: http://www.marksdailyapple.com/forum/thread62278.html