Congratulations on 3 days Julian! That's great. It does take some time for your body to adjust to the elimination of the 7000 chemicals you were cramming in it for decades. It can result in a wide range of symptoms. But the good news is they're just a temporary inconvenience when compared to the wonderful lifelong benefits you'll achieve.
You can do this Julian- and in your heart you know you must do this. Keep this quit at all costs....it's so worth it!