I take Nuvaring continuously. I have to change my Nuvaring on Wednesday, May 26. However, I am having surgery that day, so it is

Question

really bad timing. Can I change my nuvaring on May 25, the day before, after only 20 days (instead of 21) without changing the effectiveness of the contraceptive?

Vincent Ouellet · Accepted Answer

Hello, Since you are taking Nuvaring continuously, you could change it earlier and it will not affect the contraceptive effectiveness, and you should not have a period either. You could also change it a few days later, as the effect may continue a little after the 21 days, this will not affect the contraceptive effect as long as a new ring is used no later than 7 days after the scheduled change date. You may, however, have a period in this case.