So there's already a lot of talk about the negative effects of drinking coffee when pregnant, but I've been a total coffee addict all my life and have been struggling kicking the habit since I found out I was pregnant (don't worry, I quit coffee completely by now except for the occasional sips here and there when I simply just cannot resist). But recently I've come across some readings where doctors say it's okay to drink one small cup of coffee a day, or just switch to decaf. How many teaspoons of decaf is therefore safe to consume in a day?