ya, a lot of these hormonal drugs are pure crap for the female body. i've been researching this myself, b/c i notice i'm different (symptoms like yours) when taking hormonal contraceptives. check these out:
http://www.aphroditewomenshealth.com/news/hormones_depression.shtml
http://www.eurekalert.org/pub_releases/2006-01/bpl-ocp121305.php
http://findarticles.com/p/articles/mi_hb264/is_200411/ai_n13131113
http://www.sciencedaily.com/releases/2006/01/060104232338.htm
http://findarticles.com/p/articles/mi_m3225/is_8_59/ai_54567562
http://www.nationalpartnership.org/site/News2?abbr=daily2_&page=NewsArticle&id=7757
http://www.cancer.gov/cancertopics/factsheet/Risk/oral-contraceptives
http://en.wikipedia.org/wiki/Combined_oral_contraceptive_pill
http://www.geocities.com/bcjungmph/diotte.pdf