PCOS stands for polycystic ovarian syndrome, a hormonal disorder that affects women. It is diagnosed based on 2 out of the 3 criteria:
1. Irregular periods or no periods
2. Higher than normal male hormones
3. Ultrasound of polycystic ovaries
Many women have PCOS and are undiagnosed until they are trying to get pregnant because symptoms may not be so obvious, such as acne, hair growth, darkening of the skin, or weight gain.