Do you have to use a back up method on your second NuvaRing?

If you've been without a ring for less than seven days, and used the ring correctly in the prior month, there is no need for a backup method when you start the next month. If you were late putting in the new ring or made some other error, you'll need to use a backup method, like condoms or abstinence from vaginal sex, for the first seven days of the new ring.