Low drive? could it be my birth control?

I've been going out with my boyfriend for about a year and my low drive is a major problem. The only thing left that I think might be causing it is my birth control. I've been on yasmin for about a year and half. This relationship started about a year ago and has been my only serious, ual relationship. I do not have any prior experience without being on birth control to compare it to so i was just wondering if this may be why.