Forgot to take my birth control pill (yaz) & i was 20 hours late. besides contraception issues, how bad is it for my health to take it that late?

Take it Now: If you are late taking just 1 pill, it may not give you much trouble. Some women will experience breakthrough bleeding which is irregular bleeding in this cycle. It will definitely reduce your birth control efficacy. I always advise patients to use another form of birth control if they miss a pill. do not think in general they pose significant health issues.