I find caffeine affects Kayla, even now. It gives her terrible wind pains. As a rule I drink decaf tea or hot chocolate (the caffeine in this is pretty minimal and doesn't seem to affect her). But on the occasions I've had 'real' tea or eaten a LOT of chocolate, she's had some really bad nights.

I don't think it will keep the baby awake, I guess you can only try it and see! Some people drink caffeine & breastfeed without problem. Depends on the baby really