"i was on sprintec for over a year.  i took it religiously because i have never wanted kids.  i never missed a dose and took it at around the same time every day.  i am now 16 weeks pregnant.  so just warning some of you, be careful, don&#039;t completely rely on birth control pills.  i gave my doctor a list of any medications i had taken while i was on sprintec and she told me that nothing that i was taken was known to affect sprintec. "