Ultrahuman Ring Air users can get paid-for cycle tracking features. Cycle and Ovulation Pro launched on Friday. The tool enables people with irregular menstrual cycles to track their periods ...

It's hard enough to keep track of when your period is going to show every month—let alone all the other details of your menstrual cycle. But if there's one thing that's worth keeping track of, it's ...

Don't know what's going on during your menstrual cycle? You're not alone. We asked two doctors to explain every phase from ovulation to periods. From a purely biological standpoint, “the menstrual ...

Ovulation lasts 12 to 24 hours, during which an egg can be fertilized. The fertile window is six days long, including the day of ovulation and the five days before it. Understanding your cycle can ...

In theory, a person can become pregnant at any time in their cycle, but it is most likely to happen around the time of ovulation. When ovulation happens will vary according to a person’s cycle.

A woman’s fertility window refers to the short span each cycle when pregnancy is biologically possible, but it’s often ...