I gave up caffeine during induction as well as anything with sugar in it. I have migraines anyway, but they were worse and more often when I gave up caffeine (soda and coffee) for about 4 days, even though I wasn't a big coffee drinker. Now I pretty much stick to water, decaf tea and sometimes diet Vernor's gingerale.
I have been stalled for about 3 months but I like whipped cream in sugarless jello and the peanut butter candies soooo much.
I'm pretty near my goal weight and my headaches are much less frequent. I'll get serious again when I am ready and try to lose another 5-10.