"it has been effective in preventing pregnancy. however, it makes me feel like shit. i am nauseous all the time, especially the first couple of days after putting it in. i have heartburn and fatigue that has only started since i have been on the nuvaring. i got pregnant on the pill and that&#039;s why i switched, but i feel so bad all the time because of it. i haven&#039;t stopped taking it yet, i&#039;m on month four because i keep hoping it will get better, but it doesn&#039;t. it has been effective in preventing pregnancy - feeling so crappy has urged me to take a lot of pregnancy tests, and it&#039;s so convenient to only worry about it twice a month (put it in, take it out). i wish it didn&#039;t make me feel so bad, because i would continue to use it."