Why my periods are late: Factors that can cause a

Factors that can cause a late period include stress, weight loss, obesity, and hormonal conditions. Learn about eight common causes and when to see a doctor. Explore why your period might be late, the signs to look for, and what to do when it's not pregnancy-related. Get answers and solutions here. Worried about a missed period but not pregnant? Discover the top 10 reasons for delayed periods, from stress and weight to PCOS and thyroid issues. A missed or late period can have a variety of causes, and pregnancy is just one of them. Find out about five major causes of late periods — some might surprise you!