Is it perhaps the time of day you are eating? I was thinking that if you are fasting a lot and then having a late dinner before going to bed perhaps that might not be helping? Have you tried eating 2 or 3 smaller meals a day instead to see if that helps?
I do sympathise. I found i had some nausea issues when i first started primal, and also if i eat any grains now (mainly bloating and feeling generally rubbish). However I can't pinpoint what I do now that's different to then!
Starting Date: 21st May 2011
Starting Weight: 194lbs
Current Weight: 178lbs
Goal Weight: 126lbs