T.C.
You may also want to check this out...read it all the way through.
(Also ask the pharmacist if there's a way to use them as Emergency Contraception...I saw a website that mentioned you could use the same pills for that, too.)
http://www.pdrhealth.com/drug_info/rxdrugprofiles/drugs/o...
I think the tea is fine...you may want to ask another pharmacist, though, too. To some people, Chamomile is an herbal supplement...just in liquid form. :)
http://www.answers.com/topic/chamomile?cat=health
If you're looking for contraception for just the month, maybe try something else that's effective right away???