Replacing NuvaRing early does not increase the risk of pregnancy
Yes, but if you're doing so just to prove you're not pregnant, reconsider. Just take a pregnancy test instead, and continue using the NuvaRing on schedule. If you're trying to change the date of your period, just use the NuvaRing without taking the week-long break, rather than stopping the NuvaRing early and putting yourself at risk of pregnancy. Contact your health care provider for advice specific to your situation. If you want to stop NuvaRing, it's fine to remove it early. There's no other reason that I can think of in which removing NuvaRing early makes sense.
If you removed your NuvaRing a week early, put in a new ring now.
If you leave out NuvaRing for a day, replace it with a new ring and use a back up method of birth control, like condoms or abstinence from vaginal sex, for seven days. It is best not to remove NuvaRing until the ring-free week.
I found this on the NuvaRing website http://www.nuvaring.com/Consumer/patientSupport/nuvaRingHelp/index.asp?ComponentID=76346&SourcePageID=74639#1 I hope it helps. If NuvaRing
If you take out NuvaRing early, you may or may not have bleeding. This bleeding is withdrawal bleeding, not a menstrual period.
You insert NuvaRing in the vagina.
You were misinformed. If you start NuvaRing within the first five days of menstrual bleeding, you don't need a backup method.
If you start using NuvaRing on day one of your period, you will be instantly protected because you are not ovulating. If you wait until days 2 - 5, you could not be protected if you have already started to ovulate.
If you remove NuvaRing early, you're likely to have withdrawal bleeding earlier as well.
Urine does not affect NuvaRing.
It's fine to start the next ring early, and fine to leave the old ring in for 24 days. Doing so does not increase the risk of pregnancy. You may have unpredictable bleeding when trying to skip your period by skipping the ring-free interval.