The folks at Mayo always have great, detailed (but not too detailed!) information. Look here for a nice overview of all the methods you might want to consider, and then bring your questions to your next appointment with your physician.

The Mayo Clinic is an excellent resource, to be sure. They have an extensive section on various birth control methods, including the many kinds f hormonal pills. They don't list the pills by name, but they do mention the combination and other types of hormonal pills. Overall, this is a wonderful general birth control resource, though Yasmin is not specifically mentioned.