Dr Devyani Mukherjee, Reproductive Endocrinologist, says, “ One can have PCOS or PCOD without having irregular periods. Research shows that about 20% of women with PCOS have regular periods.” Even among regular menstrual cycle women, those with PCOS/PCOD can present other symptoms like hyperandrogenism (acne, excess hair, hair thinning), polycystic ovaries on ultrasound, and metabolic issues.