Question i know About the birth control and antibiotics interference and I know about using a seven day back up, and I'm doing that but my concern is that within those 7 days my sugar pills will start on day 4..so I'm just wondering since i will be in a mix with placebo and active pills during the 7 day wait using back up, will the 7 day be effective for me or should i wait longer? it just seems like the 7 day wait means taking 7 active, whearas I'm not