exactly...there is a chart thing that the doc will use to pick one for you...you answer questions, cause things like bad cramps and migraines will make you need certain pills--for me, i used lo-ovral, and then moved up to ortho...personally, i was fine with ortho--used for several years with no side effects, and it DID help my AWFUL cramps... now, i am on the depo shot--when i first started, i was really scared, cause i read all about how bad it is for some people, etc...for me, i just took my 3rd shot(so i have been on it a while now) and i have had NO side effects--i gained a little weight, but i think that is too many chocolate chip cookies and nothing the gym hasn't cured for me, it appears to be working and i LOVE it--i dont have to worry for 3 months at a time, and my shot is only $45, and i have no cramps or anything, so for me, it is ideal... you just need to sit down with your doc and figure out what is right for YOU, and then give it a while for your body to adjust--good luck