Early menopause.....???

Not necessarily. Taking the pill to aviod menstruation can really mess up your cycle. The same thing happened to me..although I'm 27. There's a blood test that they can do that will detect a certain hormone. That hormone will show how many eggs you have left and are therefore close to menopause. So...check with a doctor and get a blood test. It's probably just irregular cycles after going off the pill...but the blood test will be able to tell you for sure.