Caffeine!

I’m a big coffee drinker, but ever since I became pregnant I’ve limited the amount of coffee I drink a day to 1 cup. I’ve tried to cut down even more since I’m closer to my due date (may 2nd), and I feel kind of iffy about all the things i read about of what coffee does to the baby inside the womb, or low birth weight or premature birth. What do you all think about with coffee during pregnancy? Is it safe? Can I drink a cup of starbucks iced vanilla latte today? I’m a first time mom so I don’t want to do any harm to my baby.