I was totally addicted to caffeine when TTC DS. When I found out I was pg I stopped cold turkey and haven't taken it up again apart from the occasional drink. I don't like coffee so my beverage of choice was pepsimax. Probably worse with all those chemicals lol! I had a headache for a week after giving up but I thought I'd rather have a headache myself than have DS have one when he's born. I've tried to quit before so I knew what it would be like but didn't have that additional motivating factor to stay quit.