Does anyone know if BC pills are supposed to lighten your period??? I was on the tri-sprintec but due to the break through bleeding I was still having the DOC decided to put me on a lower dosage... I started the day before yesterday & it's been light... I can't complain... But I have been having sex with my guy... Also are the chances of becoming PG greater if the pill isn't taken @ the SAME TIME everyday? All comments are greatly appreciated!