So, it you started your period, started taking pills for a couple of weeks, and missed
a couple of pills, your body thinks it's time for another period
. You must be consistent with taking those pills for them to be effective too. Be sure, if you have missed in the past, to use a back up bc. Condoms, cervical caps, etc. Also, if you continue to regularly use this bcp Sprintec and still bleed, tell your gyn.