NuvaRing is for prsventing pregnancy. It has no use for a pregnant woman.
You use NuvaRing for three weeks at a time. You can continue using it until you want to get pregnant or until menopause, whichever comes first.
You can leave a NuvaRing in place for four weeks, as long as you insert the new one the very next day. If you mean "for how many years," you can use NuvaRing until you want to get pregnant, or until menopause.
Yes, you can use yeast infection cream while using NuvaRing. There's no need to remove the ring for treatment.
NO! It will NOT be effective! (aka you will likely get pregnant!)
That is one way of knowing you are pregnant but some women still have a period while pregnant that is why you should also use the pregnancy test
Yes, it's perfectly normal and safe to insert it while you're still bleeding. You can continue to use whatever sanitary products you normally use while the Nuvaring is in (tampons or pads).
NuvaRing will not harm or end an existing pregnancy, but it is of no use to a pregnancy woman. Take a pregnancy test to find out for sure.
If you've used NuvaRing correctly in the previous weeks, you're at no increased risk of pregnancy during the ring-free week. If you've made an error in ring use, you may be at risk regardless of bleeding.
Yes, you can use NuvaRing at any age.
I've used nuvaring incorrectly on and off for 5 months (put in late, forgot it out and started new cycle early, put in late again) and I didn't get pregnant.
Yes, I did not insert my NuvaRing for 9 days and found out I was pregnant. Follow all of the directions and be sure to use backup if your ring is out greater than 7 days.