X icon button to close sales banner

Red Friday deals are about to flow…

Download the app and create a free account to save on your Clue Plus subscription.

Download on iOS App StoreDownload on Google Play

Science Writers at Clue

A photo of Science Writers at Clue
Science Team

This article was a collaborative effort by members of Clue’s science and content teams and was produced using leading sources in American contemporary midwifery practice.

Thermometers with different temperatures, on orange background

Basal Body Temperature (BBT): how is it used to estimate ovulation?

Your reproductive hormones have a measurable impact on your temperature.

A balance scale with drops of blood dripping into each plate.a

What’s “normal”?: period volume and heaviness

Different birth control methods may affect the heaviness of your period


What’s “normal”?: period length

A typical period length for someone who’s not using hormonal birth control or an IUD is 8 days or less

Diet & Exercise

Go with the flow: yoga for PMS relief

Yoga may help to ease your cramps in a few different ways.

Illustration of an uterus with fibroids

Uterine fibroids: a common reason for irregular bleeding and pain

Fibroids are abnormal growths of muscle tissue that form in or on the walls of the uterus.