Yes. A recent study showed that consuming more than 200mg of caffeine per day (one 12 oz cup of coffee) was associated with a higher risk of miscarriage but that there was no difference in miscarriage rates in women who drank 1 cup per day. Switching to decaf or cutting back on caffeine is best during pregnancy but moderate consumption is generally safe.
Yes. Yes it is safe to drink coffee in moderation (two to three cups a day).