Good luck with it. I gave up coffee first, several years back, mild headache for a week. Gave up tea a couple of years later, again a headache, this time for a couple of weeks. I don't know to what extent it would have helped conceiving my two babies back then, but anyway... i'm sure it's better to give the stuff up! The worst trial was giving up Diet Coke, which i finally managed a couple of years ago, and that was the worst headache of the lot, felt really quite ill for a fortnight or so. I drink (by doctor's orders!) a 2L bottle of water a day, but only like fizzy, and it's fair to say that i'm thoroughly addicted to water.... Would go nuts for even half a day without fizzy water! Can't win on the addiction front, but at least it's caffeine free. I drink Redbush tea now, it's decaff, and have the occasional latte, thankfully with no accompanying headaches after the coffee. Diet coke though, demon drink...