I eat 3 times a day and have this problem (usually though not always) after breakfast. After lunch things clear up a lot and after the evening meal all is fine.
I have discovered that if I eat carbs with the evening meal - sweet potato or, on "bad" evenings, rice with a chinese meal - the next morning is much better.
I reckon it has something to do with lack of carbs but as there is no way I'm going back to grains I am learning to live with it. 10 months now - I can cope!
If you do find any "cure" - I'd LOVE to hear about it!