"i have been taking trinessa for 6+ years now. it&#039;s an effective contraceptive with many added benefits. i use it for contraception &amp; abnormal/painful cycles. there was only one big problem for me with it. here are the advantages and disadvantages for me: ~pros:~ (#1) it completely regulated my cycles. i can accurately estimate on which days it will start and end, and the bleeding is far less (in quantity and frequency). (#2) it shortened my cycles. they only last about 4-5 days now, and is much more easily managed. (#3) it reduced the pain! it still hurts, but it no longer interferes with daily life. (#4) it is free with insurance! ~cons:~ (#1) i actually vomited every day for the 1st year. that really disrupted my life, but it&#039;s fine now!"