Do you ovulate if you're on NuvaRing?

The NuvaRing is supposed to be used for three weeks, then taken out so that you WILL have a menstrual cycle. You do ovulate every month as long as you're taking the NuvaRing out for the one week, and place a new one in once that week is done. The NuvaRing, if you look at the package insert, is equipped with enough hormones to supply Birth Control for a full 30 days. If you choose to keep the ring in for four weeks, and put a brand new one in without taking a week-long break, you will not ovulate and will not have a menstrual cycle.

Having said that, it is OK to not have a menstrual cycle every single month. As long as you have 3-4 periods a year, your body will function normally and nothing bad should happen. As with many forms of birth control, there's always risk of "break-through" bleeding, which happens to many women and generally isn't reason for alarm as long as it isn't heavy and for more than a week.

I work in an OB/GYN clinic