Dryness

I'm on sprintec birth control. I've noticed that I am more dry than before I started taking it. I have been taking it for over a year. Even when my and my boyfriend take our time I still seem to not be well lubricated, we don't mind using lub but I would like to know of other birth controls that don't do this, or any reasonings. But if there's another birth control that won't do this I would love to know. Thank you