So, How Long Can You Leave A Tampon In? You should only keep a tampon in for up to 8 hours. So if you’re about to hit the sheets and are planning to sleep with a tampon in, first be sure to put in a new one, and then remove it as soon as you’re done with your beauty sleep. If you’re totally exhausted and think you’ll sleep longer than that, you should wear a pad instead. If you’re worried about how long you should keep a tampon in because you’ve heard of TSS, learn more about it here: Toxic Shock Syndrome.
How Often Should I Change My Tampon? It’s really important to choose the lowest absorbency necessary for your menstrual flow. Because your flow varies from day to day, it’s likely that you’ll need to use different absorbencies on different days of your period. Figuring out absorbency can be confusing at first. But let’s make it easy—if you take your tampon out and there’s still white showing, use a lower absorbency tampon next time. If it leaked through to your underwear, you may want to move to a higher absorbency.