Inspired by Crossfit, I decided to try going Paleo for a month. The first four days weren't too bad; just a little tired and craving starches.
That night (after the fourth day), I woke up at 1AM and my stomach hurt like crazy. It felt tight, achey, and BURNED like nothing I've ever felt before. An hour and a half later I threw up everything I'd eaten for dinner (salmon and asparagus, nothing new to my normal eating habits.) This was only the third time I've ever thrown up in my whole life so I'm inclined to take it pretty seriously.
Pre-Paleo I ate pretty healthily; I very rarely ate dairy or added sugar (had already noticed they made me feel bad). I had been eating a moderate amount of complex carbs (whole grains) and legumes.
From searching around the internet, it doesn't seem like this is a normal response to the Paleo Diet. Does anyone have a guess for why this happened?