I'll admit that I was a little lax about caffeine consumption during my last pregnancy -- not crazy excessive, but definitely more than a cup a day (DD turned out just fine).
I like to cut it out completely..I don't think it's worth the risk (even though there really doesn't seem to be one if you only have 1 drink w/ caffeine per day).
I normally am a huge coffee drinker and get a migraine if I go a few hours without caffiene. So when I found out I was pregnant I quit cold turkey. Im past the head ache stage and miss my coffee but am feeling fine without it. With each of my last pregnancies I started having 1 cup per day again after the first trimester was over. I will probably do the same this time. Unfortunatly, with my last pregnancys my 1 cup of coffee per day grew bigger as the pregnancy went on so by the end of my 3rd tri my 1 cup was = to 2 or 3 cups of coffee (24oz). oops!
oh. and I quite drinking soda about 6 months age. but I still, maybe 2x per month, take a small sip from DH's coke.
With my son, I didn't cut caffeine. If I wanted something with caffeine, i drank it. I don't drink coffee, but I normally consume LARGE amounts of caffeine. VERY large. Without meaning to, I have managed to cut caffeine out. I did get a coke today when we got take out, but I didn't finish it. Mainly, when I drink soft drinks it's ginger ale because I get nauseous.