My family is big into homeopathic remedies to our ailments, which always presents a problem when I'm pregnant.
From what I've read, because chamomile teas (and other herbal teas for that matter) usually contain small amounts of the actual herb - it is probably safe to consume in moderation during pregnancy. You should, however, avoid stronger medicinal versions of chamomile - including chamomile oil.
I'm not sure you should be downing it, though...try sticking to a cup or at most two a day. If you are still feeling queasy, try steeping some ginger root in hot water and adding a little honey. The ginger will calm your stomach and the honey, your throat.
100 lbs. down plus a carrot for every 5 more