Hey there! I was wondering if you could help me clarify something regarding the pill and the Sunday rule. I've been off Yaz since June or July, however due to the appearance of a new Significant Other I decided it's a good idea to start again as we're planning to be sexually active. Now, I started my period late last Friday night but took my first Yaz pill this Wednesday afternoon as I was out of town before that. I know it's not a Sunday start but to be quite honest I'm pretty sure my body doesn't know the difference between Monday, Thursday or Sunday. There was a gap of 6 days (more like 5.5 if I want to be picky about the time) but here I am thinking that wouldn't it be the same if I'd started my period on a Monday and had to wait till that Sunday before starting the first pill (that's 7 days actually)? The effectiveness can't change, right? Obviously I realise that it's important to use a back up contraceptive for the first week (preferably the whole month, no?) of the pill, but I'd just be really glad if you would help explain what difference in effectiveness have I made by starting on a Wednesday rather than on a Sunday.
Volunteer Assistant Director
Member # 90293
You're right. Your body doesn't know the difference in the days of the week. Depending on when in your cycle you start the pill, it might be effective sooner rather than later.
Since there's no way to tell when it becomes effective, it's sound to use a second method of birth control, or abstain from sexual activity that can lead to pregnancy, for the entire first cycle of pills.
Here's an article to fill you in on the deal with diferent start times, as well as other information you might find useful.
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