I was fine yesterday intil around 6pm then my body for ages was telling me to eat, however I stuck to it and went to bed early and today apart from headsches am feeling much better, no worried about the shakes could take em or leave em, dont feel like I want to eat anything.
It def gets easier, today is prob the hard day for you but the sounds of it, do something to take your mind of it.
You CAN do it.