I"m relatively a newbie, but I had been doing low-carb for about 2 weeks or so - completely sugar free, caffeine free, very very low carb (probably the same as induction, because what I'm doing now feels very much like that did) - anyway - about 2 weeks in, they had my favorite dessert at the hospital where I work. It's peanut butter pie - sprinkled with chopped nuts, topped with whip cream and drizzled with chocolate syrup. The crust is made out of oreo. I ate a piece.
Oh lord, an hour later and for the whole rest of the evening my whole stomach burned, it hurt so bad I swore I would never ever ever do it again. Then, about a week ago, I broke down and ate a fundraiser pack of peanut butter cups (3 reeses cups) - again, my stomach hurt and hurt and burned, and I just wanted to cry.
The next day, I started official induction - besides having a terrible headache (not sure why - haven't really changed much from what I was doing) I'm doing great, and my stomach doesn't hurt, except for feeling very full a little after I eat even when I only eat a little.
I haven't decided on whether or not to have a free day every once in awhile - I think despite the discomfort, I'm just going to "need" some of the stuff I have always loved. I've already made up my mind that if I can hit 220 (still 18 pounds away) I am going to Perkins for a slice of french silk pie ...
Good luck!
Stacie