So yesterday was my first day. It wasnt too bad apart from not being able to stand the taste of the shakes, and by the time it got to 9oclock I went to bed feeling so nauseas i could of been sick, and a thumping headache. This morning i felt really sick again, so I figured i'm probably just really hungry (im supposed to have 4 shakes a day - i only managed 3 yesterday and I didn't finish any of them). So I've just had a shake, felt really sick, carried on sipping my water - and now ive just thrown it all back up. Is this normal? Am i supposed to feel so nauseas i'm sick?! I feel terrible. If I'm supposed to feel this ill for 3/4 days until ketosis I wont last, i feel so poorly.