Women and people assigned female at birth usually start noticing physical and mood changes about one to two weeks before period bleeding starts. A total of 90% of women have premenstrual syndrome (PMS ...

Some people may feel dizzy or lightheaded during their period. However, this is not a typical menstrual cycle symptom. It may indicate an underlying issue, such as anemia or heavy bleeding. Sometimes, ...

You may experience period symptoms before your period starts as part of premenstrual syndrome. Symptoms can vary but may include cramps and breast tenderness. Somewhere between 5 days and 2 weeks ...

Menstruation is a result of puberty. This is when your body becomes capable of reproduction. When your menstrual cycle begins, your estrogen levels increase. That causes the lining of your uterus to ...