Perimenopause is the beginning or pre-menopause time and it often starts around age 40 but some women may notice a few symptoms as early as age 35. I have not known anyone who was 30 and entered their perimenopausal age phase, so perhaps your symptoms are actually from something else such as adrenal fatigue. That is a stress-related condition that is becoming more common these days. It would be a good idea to have your doctor give you a checkup and see what might be causing these symptoms.