Birth Control=Loss of drive?

I've been taking Yasmin Birth Control for over 2 years now... and it seems like my drive has decreased considerably since I've began taking it (compared to when I was not on it). Also- it seems like I lack a lot of emotion while on Birth Control. I'm not sure if its worth going off of it for a while- or if it will even solve the problem. Could this be a hormonal problem that comes along with taking birth control? Also, I'm not really comfortable talking with my doctor about switching birth controls when I'm not 18 and its awkward enough talking about it with the Dr. as it is (let alone talking about my drive). Any one who has taken this birth control or other birth control please give me any advice or prior experiences? thanks!