I'm 18 and currently using Femodene, I was due to start a new pack last Wednesday but due to problems with getting my prescription I have the new pack but it's been a week since I should have started taking it. I'm not worried about risk of pregnancy but just wondering if I should start my new pack today (a week late) or wait until my next period starts and take it on the first day? Again i'm not worried about pregnancy just wondering what is the best way to not mess about my period.