try licking a lemon while doing the swf, this is the only thing that keeps me from feeling nauseated. i also had intense headaches for 3 days and they passed. drink tons of water and by day 4 you should feel great. don't give up. this is a great cleanse. my whole attitude of food was changed after my first mc and my diet is now much approved. i am on day 2 also and this is my 2nd time around.
hang in there and good luck.