Period dates may be consistent for many women although for some women, it may not be so. An early period or a late period may be due to factors other than pregnancy. Irregular periods are common in women approaching perimenopause and menopause. There are many other causes of early period or late period which women need to be aware of as well. For example, extreme weight loss and gain can affect menstruation. This is because hormones levels fluctuate during excessive weight gain or loss resulting in hormone level changes. This influences menstruation. Other factors such as strenuous exercise, eating disorders, emotional stress, change of weather and altitude, medications, etc. may cause an early period or delay a period by a few weeks.If you have the Symptoms of Irregular Menstruation (Period)--Early menstruation, we would say herbal medicine is a safe and effective form of treatment. At TCM Window, we offer relaxing treatments and expert guidance through the whole process. We specialize in different kinds of chronic and difficult miscellaneous diseases, we offer the best possible care in a peaceful and welcoming environment. If you would want our expert to create a TCM diagnosis, please fill out the health form as requested.