I m on Lo loestrin fe and I was taking the antibiotic zpak for 5 days. I didn t know that it would effect my birth control. I got my period while taking both the lo loestrin fe and the zpak. I want to know if I can skip the white and brown pills that I usually take to get my period and just start a new pack of lo loestrin fe because I already got my period for this month. I really don t want to get my period twice in one month. I had really bad cramps and it effects my life so I don t want to go through that again in week.