Day 1 after starting eating gluten & dairy again

Yes, my stomach hurts and Im a bit nauseas. It feels really wrong eating things I know is bad for me.

Still it´s hard to know how much I need to eat to get the desired effect. Even worst then having to put myself though this “destroy my stomach as much as possible before the next test” would be if I have put myself trough this but just almost enough, so nothing shows.