 [ Symptoms ] what is the normal gallbladder ejection fraction range  i have been told mine is low following a hida scan but i have no gallstones [ Disease ] hi this below is from nuvaring nuvaring is used in a 4 week cycle keep nuvaring in your vagina for 3 weeks 21 days and then remove it for a 1 week 7 day break the ring should be inserted and removed on the same day of the week and at the same time for example if you insert your nuvaring on a monday at 800 a m you should remove it on the monday 3 weeks later at 800 a m  you will usually get your period during the 1 week break that you remove nuvaring insert a new nuvaring after the 1 week break the new ring should be inserted on the same day of the week and at the same time that you inserted it the last month even if your period has not stopped or like some women do is to keep just replacing the ring to get no periods if so then you will never no where you are then perhaps you should start again as above hope this helps your problem good luck