Both the Annovera and the NuvaRing are designed to keep in during sex. During the three weeks (21 days) that you have the Annovera in, it’s important not to take it out. But if it ever comes out, make sure to put it back in right away. If Annovera is out of your vagina for more than two hours total during those 21 days, you will need to use a backup method of birth control for seven days after putting it back in.
If you are using the NuvaRing and decide to take it out during sex during the three weeks (21 days) that you have the ring in, make sure to put it back in as soon as possible. If it’s out for more than 48 hours, you’re at risk for getting pregnant, and you’ll need to use a backup form of birth control for 7 days after putting the ring back in.