hello, i have gone through 4 birth control pills in 5 months and none of them seem to work but my last period was 11 days straight. and normally its only 4. i had awful cramps so i switched to a new one and accidentally started the Monday after my long period, and now i have period coming up in 6 days, and I'm still on my active pills. what am i supposed to do? should i call my doctor? stop taking them? thanks for help if any :')