Actually a morning cup is fine, but to be safe I would suggest that you limit your daily consumption to two cups (since some coffees may contain as much as 100 mg. each). A very extensive study a few years ago looked at women very early in pregnancy.The study found no effects on the fetus when moms drink up to three cups of coffee a day; very few women drank more than that.A more recent study found an increased risk of miscarriage when pregnant women drank more than 200 mg of caffeine per day.