I haven't had a period in 6 months. My diet hasn't changed, I'm getting plenty of calcium, I didn't lose/gain weight, have sex, changed my excercise regime, or anything. My first one was a year and a half ago, and was just brown discharge. The next one 8 months later was also a really small amount, and the next one came extremely heavily 4 months later.
After that I had 2 more extremely heavy periods (leaking through pads every hour), and they all took more than a week including weaning off. The next one after that had a normal amount but wasn't consistent in the days, and that was it. After that I had the occasional blood spots, and that's been it.

I'm not on any medication, don't do drugs, don't drink, don't smoke, and haven't been under any stress.

Duane in Japan

I am a guy checking the recent posts and saw yours, I had a girlfriend that only had her period usually twice a year, not at a regular interval either, she was over 30 and had always been that way. Some folks on this site are going to advise you go see your GYN so that is a general recommendation, I will just say that it may be a natural occurance but to be safe, go see the professionals please. You are not alone and I am sure there is a medical term for your condition, probably unpronouncable.

J_9

Have you been to the doctor? If not, you certainly need to there could be many many reasons for this but it will take a complete history, physical, and lab work to find out what it is.

LearningAsIGo

I would see a doctor if I were you. A physical should be done and he/she might put you on birth control to help you become regular.