Thread by @yffei

There's actually nothing special about Sunday. It doesn't matter what day your period starts and you don't have to start your #BirthControl the Sunday after your period starts. 🧵
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Usually I tell people to start the first day of the period or as soon as they pick up the prescription. Starting during the period decreases risk of breakthrough bleeding and starting immediately gets them protected against pregnancy asap (and often makes next period lighter).

Pill packs come with these handy stickers so it's easy to change the labels to remember what day they're on.

Birth control patches should be started on whichever day of the week they're going to remember as their patch-change day. Ditto for vaginal rings and day of the month.

Some people say starting on a Sunday ensures that they won't be on their period over the weekend. In real life, when the period starts and how long it lasts varies from person to person so there's no way to guarantee period-free weekends for every person.

But there's no reason that people need to have their period when they're on birth control! It's completely safe and just as 'natural' to not have a period.