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If starting the pill on any but the first day of menstrual bleeding, you should use a backup method for the first seven days of pill use. The pill should be about 99.7% - 99.9% effective if taken daily.

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Q: If you have very irregular period and you start using the pill on a random Sunday for the 1st time how well will it work?
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If you have periods that start at random times is that bad?

My periods are a little irregular. They start at random times for no reason at all, but I am completely healthy. Don't worry about it unless your periods start to get irregular all of a sudden. If your period cycles have always been a bit irregular, don't sweat it.


Is it fine to start the pill anytime when you haven't gotten your period due to it being irregular?

It's always advisable to start the pack the first Sunday after your period starts. If, however, you have not had your period for several months (and you are not pregnant), you can start the pill whenever, so long as it's on a Sunday.


If you were instructed to start taking birth control the first Sunday after the start of your next period and your period started on Monday when should you start the birth control?

The next Sunday. __________________________ With Sunday start, you're supposed to start on the Sunday of getting your period, or the following Sunday. For example: You start your period on Sunday : START YOUR BC. You start your period Wednesday... WAIT TIL SUNDAY TO START. **make sure to read the inserts that come with your birth control, or go to the manufacturers website, the information is there for a reason!


What happens if you start your period and its not time to?

Most likely just an irregular period.


This month will be your first time taking the pill you know to start the first Sunday after you start but what do you do if you start on Sunday?

If your period starts on sunday, you can start the pill that day.


When should you start your birth control pills the first Sunday after you start your period or the first Sunday after you finish?

Check the package for specific information, but generally the pill should be started on the first Sunday after you START your period.


Do you have your period every month when you first start?

You may not have your period every month when you first start. This is because your periods will be irregular.


When should you start birth control for a weekday period?

Sunday after your period


I started on the 2nd and my Dr told me to start the NuvaRing the Sunday after I inserted it on the 12th Since this is the first time I've been on birth control will it throw off my period?

Yes, there is a possibility that the NuvaRing can make your period come at an irregular time.


Your period ended today so when can you start birth control?

You can start your birth control the Sunday after your period.


Can you start birth control during your period?

Yes you can start birth control while on your period. Usually your doctor will tell you to start on a Sunday so it's easier to remember when you first started your pack.If you get your period on the Sunday you start you still start on birth control.


What part of my cycle should I start taking the contraceptive pill again?

You can either start taking the pill on the first day of your period, which is called day one start, or on the first Sunday after your period, which is called a Sunday start.