What could it mean if i have not had my cycle in a year and a half?

Need eval: premature menopause due to ovarian failure, development of enzyme deficiency that can interrupt normal hormone function, thyroid disease just to name a few of the possible reasons. Best see your doctor for examination and testing. Hope this was helpful. Best of luck. Dr. R

Make appointment: There are many contributing factors to regulation of your menstrual cycle. You need to make an appointment with your family doctor or GYN. They will need to get a thorough history and do some diagnostic testing to determine why your periods have stopped. Best ewishes.